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Micro test 2
| Question | Answer |
|---|---|
| Which of the following compounds is not an enzyme? | Coenzyme A |
| Which compound is being reduced in the reaction shown in figure 5.1 | NAD+ |
| Which organism is not correctly match to its energy source? | Photoautotrophs- Co2 |
| Which of the following statements about anaerobic respiration is false? | It involves the reaction of an organic final electron acceptor |
| What type of reaction is in figure 5.2? | Transmination |
| What is the faith of pyrubic acid in an organism that uses aerobic respiration? | It is converted to acetyl CoA |
| Hoe would a non-competitive inhibitor interfere with a reaction involving the enzyme shown in figure 5.3 | It would bind to b |
| How is ATP generated in the reaction shown in figure 5.4 | Substrate level phosphorylation |
| Fatty acids are oxidized in | The Krebs cycle |
| Which of the following is the best definition of oxidative phosphorylation? | A proton gradient, allows hydrogen irons to flow back into the cells through transmembrane protein channels releasing energy that is used to generate ATP. |
| From the list below, which is not produced during the krebs cycle | NADPH |
| Which of the following statements about photophosphorylation is false? | It requires CO2 |
| A bacterium that only possesses the ability to ferment obtains energy | By glycolysis only |
| The advantage of the pentose phosphate part is that it produces all of the following except | Three ATPs |
| Which biochemical process is not used during glycolysis | Beta oxidation |
| In noncyclic photophosphorylation, O2 is released from | 2H20 |
| Which of the following is the best definition for fermentation? | The partial oxidation of glucose with organic molecules serving as electron acceptor |
| All of the following are required in the reaction of micro respiration, except | Oxygen |
| Increase in the temperature of a reaction will do all of the following except | Increase the activation energy |
| In green and purple bacteria, electrons or reduce CO2 can come from | H2S |
| Assume you are going bacteria on a lipid medium that start at pH seven. The action of bacteria lipase should cause the pH of the medium two | Decrease (become more acidic). |
| Which of the following uses CO2 for carbon and H2 for energy? | Chemoautotroph |
| Which of the following uses glucose for carbon and energy? | Chemoheterotrophs |
| Which of the following has bacteriochlorophylls and uses alcohol for carbon? | Photoheterotrophs |
| Cyanobacteria are a type of | Photoautotrophs |
| Which of the following statements are true? | 1- ATP is a common intermediate between catabolic and anabolic pathways 2- anaerobic organisms are capable of generating ATP via respiration 3- ATP can be generated by the flow of protons across protein channels |
| Micro organisms that categorize sugar into ethanol and hydrogen gas could most likely be categorized as | Heterolactic fermenters |
| Which of the following statements regarding metabolism is false | Anabolic reactions degradative |
| A bacterium such as pseudomonas uses nitrate as a final electron accepter in an electron transport system. All the above statement are true except | They require light |
| Which of the following statements regarding the Entner-Doudoroff pathway is TRUE? | NADH and ATP are generated |
| Assume you are working for a chemical company and are responsible for growing a yeast culture that produce ethanol. The yeast are growing well on the Maltos medium, but are not producing alcohol. What is the most likely explanation? | 02 is in the medium |
| The rates of O2 and glucose consumption by a bacteria culture are shown in figure 5.6 assume a bacteria culture was grown in a glucose media without O2. Then O2 was added at the time mark X. The data indicate that. | Aerobic metabolism is more efficient than fermentation |
| An enzyme, citrate sin in the kreb cycle is inhibited by ATP. This is an example of all of the following, except. | Competitive inhibition |
| A non-cyclic photophosphorylation, excited electrons ultimately | Combine with hydrogen ions and NADP+ to produce NADPH |
| The graph shows the normal reaction rate of an exam and reaction rate when competitive inhibitor is present. Which description below explains the appearance of the graph. | As the substrate concentration increases, the effect of the inhibitor was overcome, and exam activity was restored |
| Why is eukaryotes generate only about 36per glucose in aerobic respiration but prokaryotes may generate about 38ATP | Eukaryotes must shuttle Pyrivates across the mitochondrial membrane by active transport |
| Are you urease test is used to identify microbacterium tuberculosis because | M. Tuberculosis produces urease |
| What is the most acidic place in figure 5.8 | a |
| In figure 5.8 the path labeled 2 is the flow of | Protons |
| In figure 5.8, the structure labeled 1 is | A plasma membrane |
| Referred to figure 5.8 in aerobic respiration, where is water formed | D |
| In figure 5.8, where is ATP produced? | E |
| Galiana bacteria can get energy from the reaction FE2+_ FE3+. This reaction is an example of. | Oxidation |
| A bacterial culture grow in a glucose peptide medium causes the pH to increase. The bacteria, most likely. | Using the peptides |
| If a cell is star for ATP, which of the following pathway would most likely to be shut down | Pentose phosphate pathway |
| Which of the following statement regarding glycolysis pathway is false? | One molecule of ATP is expended |
| In the graph at the left in figure 5.7 shows the reaction rate for an enzyme at it’s optimum temperature. Which graph show enzyme activity at a higher temperature. | B |
| Which line best depicts of facultative anaerobe in the absence of O2 | B |
| Figure 6.1, which line best depicts and obligate anaerobe in the presence of O2 | C |
| Which line shows the growth of an obligate, aerobe incubated anaerobically? | C |
| In figure 6.1, which line best illustrate the growth of a facultative onaerobe incubated aerobically | A |
| In figure 6.1, which line best pitch a psychotroph incubated at 0°C | C |
| Salts and sugars work to preserve food by creating a | Hypertonic environment |
| The addition of which of the following to a culture media will neutralize acids | Buffers |
| The Biosafety level (BSL) for most introductory microbiology laboratories is | BSL-1 |
| The biosafety level (BSL) for a clinical microbiology laboratory working with potentially airborne pathogens, such as tuberculosis bacteria, is | BSL-3 |
| The term aerotolerant anaerobe refers to an organism that | Does not use oxygen, but tolerated it |
| Which of the following is an advantage of the standard plate count | Determines the number of viable cells |
| Which of the following is an advantage of the direct microscopic count? | Requires no incubation time |
| Most bacteria produced by | Binary fission |
| Most bac grow best at ph | 7 |
| Most fungi grow best at ph | 5 |
| Which of the following pairs of microbes classification terms and optimal growth temperatures is mismatch? | Thermophile – growth at 37°C |
| Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt | Facultative halophiles |
| Which of the following is the best definition of generation time? | The length of time needed for a cell to divide |
| During which growth phase will gram-positive bacteria, be more susceptible to penicillin | Log phase |
| Which of the following is not a direct method to measure microbial growth? | Metabolic activity |
| The dash method is used to indirectly measure, microbial growth of filamentous, bacteria, and molds. | Dry weight |
| Which of the following is an example of a metabolic activity that could be used to measure microbial growth? | Glucose consumption |
| The source of nutrient in nutrient agar is | Peptone and beef extract |
| Which of the following is the best method to sterilize heat-labeled solutions? | Membrane filtration |
| Which of the following best describes the pattern of microbial death? | The cells in a population die at a constant rate |
| Which of the following chemical agents is used for sterilization | Etheline oxide |
| Which of the following substances is used for surgical hand scrubs? | Chlorhexidine |
| Which of the following peers of terms is mismatched | Bacterial static- kills vegetative bacterial cells |
| The most effective form of chlorine is which of the following | Hypochlorous acid |
| Which of the following regarding antimicrobial control agents is false? | Alcohol effectively inactivate, non-developed viruses by attacking lipids |
| Which of the following does not achieve sterilization? | Pasteurization |
| Which of the following is a limitation of autoclave? | It cannot be used with heat– labile materials |
| an agent used to reduce the number bacteria on a toilet would most accurately be called an | Disinfectant |
| Application of heat to living cells can result in all of the following except | Decreased thermal death time |
| Which of the following disinfectant act by disrupting the plasma membrane | Biel |
| A gene is defined as | A sequence of nucleotides in DNA that codes for a functional product |
| Which of the following pairs is mismatched? | RNA polymerase- makes a molecule of RNA from an RNA template |
| Which of the following statement is false? | DNA replication proceeds in only One Direction around the bacterial chromosomes |
| DNA is constructed of | Two strands of nucleotides running in an anti-parallel configuration |
| Which of the following is not a product of transcription? | A new strand of DNA |
| Which of the following statements about bacteriocins is false? | They cause food poisoning symptoms |
Created by:
Stacy29