Exam 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Which of the following organisms have eukaryotic cells that do NOT contain a cell wall | show 🗑
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| show | Antibiotics that interfere with protein synthesis harm both prokaryotic and eukaryotic ribosomes.
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| Which of the following pairs is MISMATCHED? | show 🗑
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| show | phagocytosis
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| show | Prokaryotes contain peptidoglycan in their cell walls.
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| A population of bacterial cells has been placed in a very nutrient-poor environment with extremely low concentrations of sugars and amino acids. Which kind of membrane transport becomes crucial in this environment? | show 🗑
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| The nucleoid of the bacterial cell __________. | show 🗑
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| show | are resistant to high temperatures, UV light, and desiccation
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| The endoplasmic reticulum that has ribosomes attached to its outer surface is referred to as __________. | show 🗑
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| Which of the following is NOT a functionally analogous pair? | show 🗑
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| A __________ solution is a medium in which the overall concentration of solutes equals that found inside the cell. Water enters and leaves the cell at the same rate. | show 🗑
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| Which of the following processes occurs in bacterial plasma membranes but NOT in eukaryotic plasma membranes? | show 🗑
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| show | cell membrane
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| show | it controls the passage of molecules into the cell
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| The nucleus of a eukaryotic cell differs from the nucleoid of a prokaryotic cell in all of the following ways EXCEPT which one? | show 🗑
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| show | inclusion bodies
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| Which of the following processes uses membrane proteins that act as channels or carriers allowing ions or large molecules to move across the plasma membrane without using energy? | show 🗑
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| Which of the following statements is true? | show 🗑
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| show | Endocytosis
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| show | Active transport
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| Within the cytoplasm of bacterial cells are reserve deposits where certain nutrients accumulate. These are called __________. | show 🗑
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| You have isolated a cell with a peptidoglycan cell wall. What other structure can you safely assume the cell has? | show 🗑
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| The antibiotic polymyxin B combines with phospholipids. This will cause __________. | show 🗑
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| show | the cells plasmolyzed
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| show | peritrichous
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| Cocci may be arranged as __________. | show 🗑
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| show | lophotrichous
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| Many pathogenic (disease-producing) bacteria produce a(n) __________ that protects them from phagocytosis by host cells. | show 🗑
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| show | Observation of nuclei
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| show | gram-positive staphylococci
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| Penicillin specifically interferes with peptidoglycan synthesis. Which of the following cells is most likely to be damaged by penicillin? | show 🗑
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| Which of the following is NOT a structure of prokaryotic cells? | show 🗑
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| Spirochetes and spirilla are both spiral-shaped bacteria. However, they differ in that spirochetes have __________ and spirilla do not. | show 🗑
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| show | protection from phagocytosis
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| Why is penicillin selectively toxic to bacterial cells but harmless to human cells? | show 🗑
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| Which of the following is NOT true of the gram-negative outer membrane? | show 🗑
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| show | streptococci
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| show | The cell will swell and burst.
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| show | rich in degradative enzymes
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| You are observing a Gram stain of rod-shaped microorganisms that are linked in a chain and stain purple. How would you describe these bacteria using the correct terminology for the cell shape and arrangement? | show 🗑
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| show | move toward or away from chemical stimuli
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| show | tumbles
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| All of the following are found in the cell walls of gram-positive bacteria EXCEPT __________. | show 🗑
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| Which of the following is a likely outcome, based on the unique cell structure of members of the genus Mycoplasma? | show 🗑
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| show | move toward a source of light.
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| show | shrink
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| show | spheroplast—gram-negative bacteria that are exposed to lysozyme but retain some of the outer membrane
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| Which of the following bacterial structures is necessary for chemotaxis? | show 🗑
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| Which of the following statements about a gram-negative cell wall is FALSE? | show 🗑
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| show | Creates a slimy, slippery coating that prevents bacteria form attaching to surfaces
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| Where is the genetic information of the cell stored? | show 🗑
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| The structural framework in a cell is the | show 🗑
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| show | mitochondria
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| show | mRNA
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| One of the ways smooth endoplasmic reticulum (ER) differs from rough endoplasmic reticulum is that rough ER is covered by | show 🗑
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| show | Golgi apparatus
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| show | lysosomes
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| show | smooth endoplasmic reticulum (ER)
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| show | plasma membrane
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| show | The concentration gradient drives the movement.
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| show | molecules move, but there is no net movement in a particular direction.
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| Which of the following would not move freely across the cytoplasmic membrane? | show 🗑
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| show | Circular chromosome, not enclosed within a nuclear envelope
Peptidoglycan-containing cell wall
Flagella that rotate, composed of flagellin
70s ribosomes
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| Eukaryotic cells | show 🗑
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| Select the structures below that are found in all bacterial cells. | show 🗑
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| show | cell wall
flagella
capsule
fimbriae
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| Identify antibacterial strategies that would likely be selectively toxic for bacteria. | show 🗑
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| show | It will be readily phagocytized upon entering the host
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| show | It will be unable to adhere to host tissue and establish infection
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| show | Fimbriae
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| show | Streptomycin targets the 70S ribosome and inhibits protein synthesis
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| show | Penicillin is unable to pass through the outer membrane of the cell wall.
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| Which of the following is NOT a classic sign and/or symptom of a urinary tract infection? | show 🗑
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| Pick the answer that lists the composition of the bacterial cell wall. | show 🗑
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| Gram-positive bacterial cell wall | show 🗑
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| Gram-negative bacterial cell wall | show 🗑
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| A cell wall is a requirement for all living bacteria. | show 🗑
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| Prokaryote only | show 🗑
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| Eukaryote only | show 🗑
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| show | Flagella
Plasma membrane
Ribosomes
Cytoplasm
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| show | the common cold
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| show | Penicillin will interfere with peptidoglycan synthesis, ultimately weakening the cell wall and leading to cellular lysis.
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| What effect will the penicillin have on Shelly’s cells? | show 🗑
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| show | Retroviridae
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| A virus may contain any of any of the following EXCEPT (a) __________. | show 🗑
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| Some viruses have a membranelike structure on their surface, composed of lipids, proteins, and carbohydrates. This is called a(n) __________. | show 🗑
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| The potential use of viruses that infect bacteria to treat bacterial infections in humans is known as __________. | show 🗑
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| show | Disease symptoms
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| show | Electron
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| show | Poxviridae; chickenpox
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| Influenza viruses are classified according to their hemagglutin and __________ proteins. | show 🗑
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| show | Viral nucleic acid is surrounded by a plasma membrane.
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| A double-stranded, enveloped DNA virus that contains reverse transcriptase belongs to which family? | show 🗑
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| The protein coat of a virus is called the __________. | show 🗑
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| Viruses possess genetic material comprised of DNA or __________. | show 🗑
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| Which statement about viruses is FALSE? | show 🗑
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| show | A group of viruses sharing the same genetic information and structure
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| What is the usual size range of viruses? | show 🗑
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| How does specialized transduction differ from regular lysogeny? | show 🗑
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| show | The host DNA integrates, with the prophage, into the new recipient chromosome.
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| How can specialized transduction contribute to the transfer of antibiotic resistance genes in a bacterial population? | show 🗑
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| How are viruses different from eukaryotic cells? | show 🗑
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| What is the function of the structural elements of a virus? | show 🗑
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| Lysogenic viral DNA which has integrated into the host genome is referred to as | show 🗑
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| Which of the following events might trigger induction of a temperate bacteriophage? | show 🗑
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| How is the lytic cycle different from the lysogenic cycle with respect to the infected host cell? | show 🗑
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| What is the fate of the prophage during the lysogenic stage? | show 🗑
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| In which stage is the viral DNA introduced into the cell? | show 🗑
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| In which stage does formation of mature viruses occur? | show 🗑
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| The host DNA is usually degraded during which stage? | show 🗑
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| What would be the fate of a lytic bacteriophage if the host cell died prior to the assembly stage? | show 🗑
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| show | Proteinaceous infectious particles
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| In what year did Stanley Prusiner discover prions? | show 🗑
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| show | Scrapie
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| show | They lack nucleic acid.
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| show | assisting in normal synaptic development and function.
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| show | Normal PrP have alpha-helices; infectious PrP have beta-pleated sheets.
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| show | Prions transform normal proteins into the misfolded beta-pleated sheet configuration; therefore, prions multiply by conversion.
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| show | The multimers are more stable and resistant to protease.
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| show | Chronic wasting disease
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| Which of the following prion diseases was also known as laughing disease? | show 🗑
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| Which of the following conditions in humans is linked to bovine spongiform encephalopathy? | show 🗑
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| show | Thalamus
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| show | The prion disorder causes infected sheep to scrape against objects until their skin is raw.
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| Which of the following is NOT a sign or symptom of the common cold? | show 🗑
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| show | Rhinoviruses and coronaviruses
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| show | Proteins
Nucleic acids
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| Arrange the following steps in the order in which they occur during the reproductive cycle of the type of virus that causes the common cold. | show 🗑
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| show | Viruses do not possess targets for antibiotics.
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| show | The "host range" for a virus is determined by the presence or absence of particular components on the surface of a host cell that are required for the virus to attach.
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| Which statement concerning viral structure is true? | show 🗑
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| show | fermentation tests
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| show | Diploid cell culture lines, developed from human embryos, are widely used for culturing viruses that require a human host.
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| Which statement is INCORRECT concerning animal viruses? | show 🗑
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| Which of the following is true concerning a lysogenic viral replication cycle? | show 🗑
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| show | coronavirus
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| Which of the following statements regarding latent viral infections is true? | show 🗑
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| show | Normal host cellular prion proteins (PrPC) are converted into scrapie proteins (PrPSc).
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| Which of the following would be the first step in biosynthesis of a virus with a - (minus) strand of RNA? | show 🗑
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| An envelope is acquired during which of the following steps? | show 🗑
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| show | Wiles-Davidoff syndrome
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| show | Varicellovirus
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| show | Measles virus
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| show | Blocking viral attachment to host cell receptors
Blocking uncoating of the virus after entry
Blocking insertion of viral DNA into the host cell chromosomes
Blocking biosynthesis of viral nucleic acids
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| show | Viroid: infectious DNA
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| show | latent infection
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| show | Measles virus
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| Infectious agents known as __________ cause Creutzfeldt-Jakob disease (CJD). | show 🗑
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| show | Retrovirus
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| show | altering normal proteins
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| show | shingles
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| What type of infectious agent causes potato spindle tuber disease? | show 🗑
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| show | Prophage
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| Which method CANNOT be used to culture viruses in a laboratory? | show 🗑
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| After the attachment and entry of a virus into a host cell, what is the next step in the multiplication of animal viruses? | show 🗑
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| show | lysogeny
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| Which of these statements is NOT true? | show 🗑
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| Cell lines derived from transformed (cancerous) cells are called __________. | show 🗑
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| show | phage conversion
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| Which two virus families make DNA from an RNA template? | show 🗑
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| How might a virus pick up a human oncogene? | show 🗑
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| How would you know that viruses were multiplying in a confluent lawn of E. coli on a solid culture medium? | show 🗑
|
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| show | Synthesize mRNA from the – sense RNA genome
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| show | reverse transcriptase
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| Some viruses leave a cell by pushing through the cell membrane (rather than lysing the cell). When this happens, a portion of the membrane wraps around the viral capsid, becoming the envelope. What is the name for this process? | show 🗑
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| In polio virus replication, the function of the antisense (– strand) RNA is to __________. | show 🗑
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| Which of the following is the preferred method for cultivating many animal viruses? | show 🗑
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| show | Some viruses are grown and isolated in embryonated eggs; especially those used for vaccines. The egg proteins may still be present in the viral vaccine preparations.
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| show | phage DNA is inserted into the host chromosome
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| Which of these processes of viral multiplication is most likely to damage the host cell? | show 🗑
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| How would you know that viruses were multiplying in a confluent lawn of E. coli on a solid culture medium? | show 🗑
|
||||
| show | Picornavirus
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|
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| Which of these enzymes is necessary for the replication of a + strand RNA virus? | show 🗑
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| The following steps occur during bacteriophage replication. What is the second step? | show 🗑
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| show | active transport
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|
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| show | a hypotonic solution
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|
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| Which of the following statements accurately describes bacterial cell walls? | show 🗑
|
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| show | gram-positive streptococci
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|
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| What type of reaction is represented by the equation below? Molecule AB →Molecule A + Molecule B | show 🗑
|
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| show | pathways break down macromolecules into simple component parts
pathways release energy
reactions couple with ATP synthesis
Some energy released by catabolic reactions is stored in the form of chemical bonds in ATP.
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| Anabolic | show 🗑
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| In the generation of ATP, energy is released when electrons are passed to a series of electron acceptors and finally to oxygen or another inorganic compound. What is this process called? | show 🗑
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| What is the purpose of fermentation? | show 🗑
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| Which type of metabolic diversity contains most pathogens? | show 🗑
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| Why do all enzymatic reactions need activation energy? | show 🗑
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| What is meant by the statement “Enzymes are biological catalysts”? | show 🗑
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| Why are enzymes important to biological systems? | show 🗑
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| How does a competitive inhibitor slow enzyme catalysis? | show 🗑
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| What enables competitive inhibitors to bind to a specific enzyme? | show 🗑
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| show | PABA will not be catalyzed.
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| show | Competitive inhibitors decrease the rate of enzyme activity.
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| show | The inhibitor binds to the enzyme in a location other than the active site, changing the shape of the active site.
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| What would be the likely outcome if you increased the concentration of substrate for an enzyme in the presence of a noncompetitive inhibitor? | show 🗑
|
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| How is nevirapine used to treat HIV infections? | show 🗑
|
||||
| show | a redox reaction.
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|
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| show | the donor molecule loses an electron and becomes oxidized.
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|
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| Why is reduction the term used to describe the gain of an electron? | show 🗑
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| show | Redox reactions involve an oxidation reaction coupled with a reduction reaction.
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| show | The 6-carbon skeleton of glucose is enzymatically split into two 3-carbon compounds.
Glucose is the original electron donor.
Glyceraldehyde 3-phosphate is oxidized, and NAD+ is reduced to NADH.
More ATP is formed than is consumed in this process
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| Why is ATP required for glycolysis? | show 🗑
|
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| Glycolysis literally means | show 🗑
|
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| How many net ATPs can be made from one molecule of glucose in glycolysis? | show 🗑
|
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| What carbon molecules remain at the end of glycolysis? | show 🗑
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| show | Glycolysis is also called the Embden-Meyerhof pathway.
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| show | NADH and ATP
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| show | They are oxidized completely to carbon dioxide and water.
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|
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| What is meant by substrate-level phosphorylation? | show 🗑
|
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| Which of the following is needed as a reactant for the first step of the citric acid cycle? | show 🗑
|
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| What is the net production of ATP in glycolysis? | show 🗑
|
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| show | It is an alternative way to return electron carriers to their oxidized state.
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|
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| What is the role of pyruvic acid in fermentation? | show 🗑
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| show | It returns to glycolysis to pick up more electrons.
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| show | Lactic acid and propionic acid
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|
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| What is the intermediate product formed by pyruvic acid during alcoholic fermentation? | show 🗑
|
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| Where would you expect to find electron transport chains in a prokaryote? | show 🗑
|
||||
| show | Succinyl CoA
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|
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| The process of generating ATP using a proton gradient is referred to as | show 🗑
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| Why does FADH2 yield less ATP than NADH? | show 🗑
|
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| Which of the following can be used as a final electron acceptor for aerobic respiration? | show 🗑
|
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| show | Ubiquinones are not made of protein; cytochromes are.
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|
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| show | Protons move from outside the membrane to inside the membrane.
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|
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| show | Lack of iron would mean lack of heme, and thus lower amounts of functioning cytochrome proteins. This would mean lower energy yields.
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|
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| show | To produce a proton gradient to make ATP
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|
||||
| Which of the following is used in photosynthesis by both plants and cyanobacteria? | show 🗑
|
||||
| What molecule is used to capture light energy? | show 🗑
|
||||
| Where do the electrons from photosystem I ultimately go after they are passed through the electron transport proteins? | show 🗑
|
||||
| show | NADPH
🗑
|
||||
| show | Sunlight
🗑
|
||||
| Which of the following types of organisms uses hydrogen sulfide for reducing power? | show 🗑
|
||||
| show | Green sulfur bacteria
🗑
|
||||
| show | Cyanobacteria
🗑
|
||||
| What is the key difference between photoheterotrophs and photoautotrophs? | show 🗑
|
||||
| Which of the following is a trait unique to photosynthetic eukaryotes? | show 🗑
|
||||
| Noncyclic photophosphorylation employs which photosystem(s)? | show 🗑
|
||||
| show | Reduce NADP+ to NADPH
🗑
|
||||
| show | They are used in the Calvin-Benson cycle.
🗑
|
||||
| Why is the Calvin-Benson cycle also termed the "light independent reactions" of photosynthesis? | show 🗑
|
||||
| show | NADPH
🗑
|
||||
| show | G3P
🗑
|
||||
| show | One
🗑
|
||||
| show | glycolysis → acetyl CoA → citric acid cycle → electron transport chain
🗑
|
||||
| What is the correct general equation for cellular respiration? | show 🗑
|
||||
| Which of the following processes takes place in the cytosol of a eukaryotic cell? | show 🗑
|
||||
| show | mitochondrion
🗑
|
||||
| Which statement describes glycolysis? | show 🗑
|
||||
| Which statement describes the citric acid cycle? | show 🗑
|
||||
| Which statement describes the electron transport chain? | show 🗑
|
||||
| show | 6CO2 + 6H2O → C6H12O6 + 6O2
🗑
|
||||
| In which of the following organelles does photosynthesis take place? | show 🗑
|
||||
| show | An electron transport chain
🗑
|
||||
| What two molecules are produced by the light reactions and used to power the Calvin cycle? | show 🗑
|
||||
| show | H2O
🗑
|
||||
| show | Carbon dioxide (CO2)
🗑
|
||||
| What transports electrons from the light reactions to the Calvin cycle? | show 🗑
|
||||
| show | thylakoids; stroma
🗑
|
||||
| show | slightly increasing the temperature within the optimum range
🗑
|
||||
| show | Ribozymes have an active site and are not used up in chemical reactions.
🗑
|
||||
| Which of the following is true of aerobic respiration compared to anaerobic respiration? | show 🗑
|
||||
| Which of the following statements is FALSE regarding the oxidation of proteins? | show 🗑
|
||||
| show | The gut microbiome breaks down dietary compounds that human metabolic enzymes cannot break down.
🗑
|
||||
| show | To regenerate NAD+ for glycolysis.
🗑
|
||||
| show | H2S
🗑
|
||||
| show | Fever
🗑
|
||||
| show | True
🗑
|
||||
| Catabolic Reaction | show 🗑
|
||||
| show | Ammonia is added to glutamate to form glutamine
.Four amino acids are linked together to form a tetrapeptide.
Ribose and inorganic phosphate are bonded to form a nucleotide base.
A uracil base is added to an mRNA strand by RNA polymerase
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|
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| show | 1. A bacterium that is a common cause of human infections but is also part of our microflora would have to be in the mesophile class of bacteria.
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|
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| show | 2. A bacterium with increased cholesterol in its cytoplasmic membrane to maintain membrane fluidity at extremely low temperatures would probably fall in the psychrophile class of bacteria.
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|
||||
| thermophile | show 🗑
|
||||
| show | 2 ATP and 2 NADH
🗑
|
||||
| In aerobic cellular respiration, if four molecules of pyruvic acid enter steps two, the formation of acetyl CoA and three, the Krebs cycle, how many molecules of ATP, NADH, and FADH2 will be formed? | show 🗑
|
||||
| show | Without the movement of electrons through the electron transport chain, the hydrogen ion gradient is not produced, chemiosmosis will not occur. Without chemiosmosis, the cell is unable to produce enough cellular ATP to survive.
🗑
|
||||
| show | The intermediate step
🗑
|
||||
| Which of the following statements accurately describes the difference between aerobic and anaerobic respiration? | show 🗑
|
||||
| show | Catabolic reactions are exergonic; they break down complex organic molecules into simpler ones.
🗑
|
||||
| Which of the following statements is correct about enzymes? | show 🗑
|
||||
| All of the following pairs are correctly matched EXCEPT __________. | show 🗑
|
||||
| show | anabolic
🗑
|
||||
| show | occurs at the plasma membrane and not the mitochondria
🗑
|
||||
| show | competition with the substrate for binding at the active site
🗑
|
||||
| In an enzymatic reaction involving oxidation of a substrate, which of the following would be required? | show 🗑
|
||||
| show | Oxidation; reaction in which electrons are gained
🗑
|
||||
| show | temperature
amount of substrate
pH
🗑
|
||||
| show | feedback inhibition
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| show | Electrons
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| show | conversion of pyruvic acid to lactic acid
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| show | Substrate-level phosphorylation
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| Enzymes are important in living organisms because they __________. | show 🗑
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| show | amination
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| show | acid
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| show | synthesize sugars
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| A Thiobacillus bacterium uses the Calvin-Benson cycle to reduce CO2 and the oxidation of sulfide ions for energy. This organism is a __________. | show 🗑
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| show | Amphibolic pathways
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|
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| Which of the following are products of noncyclic photophosphorylation reactions in oxygenic organisms? | show 🗑
|
||||
| Carbon fixation occurs during __________. | show 🗑
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| show | carbon fixation
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| Which group of organisms has members representing each of the following nutritional classifications: chemoheterotrophs, chemoautotrophs, photoheterotrophs, and photoautotrophs? | show 🗑
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| Which organism is NOT correctly matched to its energy source? | show 🗑
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| Which one molecule could provide the carbon source, the energy source, and the electron source for a chemoheterotroph? | show 🗑
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| The __________ is commonly used to identify aerobic microorganisms. | show 🗑
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||||
| show | pentose phosphate pathway
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|
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| show | chemoheterotroph
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| show | chemoautotroph
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|
||||
| show | ATP
🗑
|
||||
| show | deamination
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|
||||
| show | chemoautotrophs
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|
||||
| Streptococci lack an electron transport chain. How many molecules of ATP can a Streptococcus cell net from one molecule of glucose? | show 🗑
|
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| Which of the following four stages of glucose oxidation during aerobic respiration requires molecular oxygen? | show 🗑
|
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| All of the following steps are involved in the aerobic electron transport chain. Which step happens last? | show 🗑
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| Fermentation differs from anaerobic respiration in that fermentation does NOT __________. | show 🗑
|
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| The complete oxidation of glucose in aerobic and anaerobic respiration involves which three stages? | show 🗑
|
||||
| The proton motive force is __________. | show 🗑
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| show | High ATP and high NADH
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|
||||
| The complete oxidation (catabolism) of glucose typically involves three stages. The greatest number of ATPs is produced in which stage? | show 🗑
|
||||
| At the completion of the Krebs cycle, the carbons from glucose are found in __________. | show 🗑
|
||||
| Which of the following statements is accurate concerning glucose metabolism? | show 🗑
|
||||
| show | NADH and FADH2
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|
||||
| During glycolysis, electrons from the oxidation of glucose are transferred to __________. | show 🗑
|
||||
| show | ATP
🗑
|
||||
| Glycolysis produces ATP through __________. | show 🗑
|
||||
| show | oxidized when electrons are passed to the electron transport chain
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|
||||
| show | Lipids
Proteins
Sugars
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|
||||
| All of the following are potential end-products of fermentation EXCEPT __________. | show 🗑
|
||||
| show | Log phase
🗑
|
||||
| show | Streak plate
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|
||||
| If 52 bacterial colonies grow on a nutrient agar plate inoculated with 1 ml of a 1:1000 dilution of hamburger, how many bacteria are in the original hamburger sample? | show 🗑
|
||||
| Assume that you inoculated potato salad with 10 bacterial cells and stored it at room temperature. After 3 hours, there are 640 cells. How many generations did the cells go through? | show 🗑
|
||||
| show | dividing at the fastest possible rate
🗑
|
||||
| show | binary fission
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|
||||
| show | Inward growth of membrane
🗑
|
||||
| show | Filtration
🗑
|
||||
| show | takes less than 12 hours to complete
🗑
|
||||
| Bacterial growth refers to an increase in the __________ of bacterial cells. | show 🗑
|
||||
| show | pour plate
🗑
|
||||
| show | storing cultures at room temperature (25°C)
🗑
|
||||
| During which phase of the cell cycle are bacteria dividing equal to bacteria dying? | show 🗑
|
||||
| During the lag phase, __________. | show 🗑
|
||||
| show | Lysis of the existing cell wall
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|
||||
| show | Turbidity
🗑
|
||||
| If a single bacterium replicated every 30 minutes, how many bacteria would be present in 2 hours? | show 🗑
|
||||
| Bacteria that CANNOT grow in the presence of oxygen (O2) are called __________. | show 🗑
|
||||
| An organism that grows both in the presence and the absence of oxygen and uses oxygen when it is available is called a(n) __________. | show 🗑
|
||||
| show | Psychotroph
🗑
|
||||
| show | The bacteria are most likely growing in biofilms.
🗑
|
||||
| show | mesophilic and heterotrophic
🗑
|
||||
| Which of the following statements regarding biofilms is true? | show 🗑
|
||||
| show | a microaerophile
🗑
|
||||
| show | The ability of bacteria in a biofilm to communicate with each other and coordinate their activities
🗑
|
||||
| The ability of microbes to utilize N2 as a nitrogen source is called __________. | show 🗑
|
||||
| show | obligate aerobe
🗑
|
||||
| show | Molecular oxygen
🗑
|
||||
| show | psychrotroph
🗑
|
||||
| show | psychrotrophs
🗑
|
||||
| show | obligate anaerobes
🗑
|
||||
| show | Hyperthermophiles; 0°C
🗑
|
||||
| To look for bacteria that degrade petroleum, a culture medium containing crude oil, sodium nitrate, phosphate buffer, and magnesium sulfate is inoculated with soil. This medium is __________. | show 🗑
|
||||
| A bacterial medium contains chemicals that inhibit gram-positive bacteria and indicators so that bacteria that ferment lactose produce red colonies, and bacteria that do not ferment lactose produce colorless colonies. Such a medium is called __________. | show 🗑
|
||||
| show | reduced
🗑
|
||||
| show | BSL-2
🗑
|
||||
| show | selective
🗑
|
||||
| show | Nutrient agar contains ingredients that combine with oxygen and remove it.
🗑
|
||||
| show | complex medium
🗑
|
||||
| Niacin, when added to a medium, would be considered a(n) __________. | show 🗑
|
||||
| A medium containing lauryl sulfate inhibits the growth of gram-positive bacteria. This medium is __________. | show 🗑
|
||||
| Blood agar used to observe hemolysis or clearing around Streptococcus pyogenes colonies is an example of a(n) __________. | show 🗑
|
||||
| show | BSL-4
🗑
|
||||
| show | proteins
🗑
|
||||
| Members of the genus Clostridium display the following properties: Gram-positive bacilli Endospore formation Anaerobic growth Which of the following would be appropriate for the culture of members of this genus? | show 🗑
|
||||
| Salt agar tends to inhibit the growth of most organisms, except Staphylococci. This is an example of a(n) __________ medium. | show 🗑
|
||||
| show | buffers
🗑
|
||||
| show | Radioactive carbon dioxide
🗑
|
||||
| show | amphibolic pathways
🗑
|
||||
| show | glycolysis, Krebs cycle, and the electron transport chain
🗑
|
||||
| show | decomposition reaction
🗑
|
||||
| When bacteria are inoculated into a new sterile nutrient broth, their numbers don’t begin to increase immediately. Instead, there is a lag phase that may last for an hour or even several days. Why don’t bacterial numbers increase immediately? | show 🗑
|
||||
| show | Chemostats provide a continued source of fresh nutrients and remove wastes and dead bacterial cells.
🗑
|
||||
| show | Two genetically identical daughter cells
🗑
|
||||
| show | Forty-eight cells
🗑
|
||||
| show | Disappearance of nuclear envelope
🗑
|
||||
| Which step of binary fission is the reason for genetically identical daughter cells? | show 🗑
|
||||
| Microbes have very narrow optimum temperature ranges. Which of the following classifications of microbes are most likely to cause human disease, based on their temperature requirements? | show 🗑
|
||||
| Bacteria that can grow in the presence or absence of oxygen (O2) are called __________. | show 🗑
|
||||
| show | Reducing media are complex media containing chemicals, such as thioglycolate, that combine with oxygen, creating an anaerobic environment.
🗑
|
||||
| Which of the following phases of the bacterial growth curve is matched with the correct definition? | show 🗑
|
||||
| Which process is best for the short-term storage of bacterial cultures? | show 🗑
|
||||
| show | The chromosomes are attached to different parts of cell membrane, which elongates and thus separates the chromosomes.
🗑
|
||||
| show | No time is required -- they are ready to divide immediately after DNA replication and separation of the daughter cells is complete if conditions are right.
🗑
|
||||
| show | 3, 1, 2, 4
🗑
|
||||
| What would happen if the septum did not form during binary fission? | show 🗑
|
||||
| Starting with three cells, how many cells would result from three rounds of replication? | show 🗑
|
||||
| show | biofilms develop on catheters.
🗑
|
||||
| For which of the following types of microbes would a microbiologist employ living host cells to support their growth? | show 🗑
|
||||
| show | filtration--direct method
🗑
|
||||
| show | superoxide dismutase
🗑
|
||||
| show | catalase
🗑
|
||||
| show | thermophile – growth at 37°C
🗑
|
||||
| show | 5
🗑
|
||||
| show | 7.
🗑
|
||||
| show | does not use oxygen but tolerates it.
🗑
|
||||
| show | buffers
🗑
|
||||
| show | phosphorus – used for production of carbohydrates.
🗑
|
||||
| show | False
🗑
|
||||
| Pathogenic bacteria isolated from the respiratory or intestinal tracts of humans are | show 🗑
|
||||
| What would you expect to observe when a halophile that cannot ferment mannitol is cultured on mannitol salts agar? | show 🗑
|
||||
| How is pathogenic Staphylococcus aureus distinguished from other species of Staphylococcus? | show 🗑
|
||||
| What factors that are important when formulating culture media? | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
brittanyr
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