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Micro - Chapters 1&2
Lecture Assignment
| Question | Answer |
|---|---|
| An extreme environment in which archaea have been found is | boiling hot springs. |
| An organism is categorized in a domain according to its cell size. | False |
| Thiomargarita namibiensis can not be a eukaryote because it is only 1 mm in width. | false |
| The outbreak of measles within the last few years is due to | a decline in vaccination of children in the previous years. |
| Although it is said that the twentieth century was the Age of Physics, it is predicted that the twenty-first century will be the age of | microbial biodiversity. |
| What was important about the shape of the flasks used by Pasteur in his experiments proving biogenesis? | The swan neck of the flasks allowed “vital force” to enter them but prevented bacteria from falling into the broth. |
| Plants are dependent on microorganisms for | changing atmospheric nitrogen to a usable form. |
| Viruses and bacteria are both unicellular. | false. |
| What do viruses, viroids, and prions all have in common? | They are acellular agents of disease. |
| Which of the following about the Golden Age of Medical Microbiology is FALSE? | It started with the development of the first microscopes. |
| A viral particle consists of DNA, RNA, and protein. | false |
| Microorganisms are involved in all of the following EXCEPT | There are no exceptions here. There are microorganisms that participate in each of these activities. |
| Which of the following would Antonie van Leeuwenhoek not have observed? | Human immunodeficiency virus |
| A patient’s throat swab yields organisms that appear as long chains of round cells under light microscope. Given this information, it is possible that the organism is | Streptococcus pyogenes. |
| Viroids are naked (lacking a protein shell) pieces of RNA that infect plants. | true |
| Bacteria have been used to help produce or modify all of the following food products EXCEPT | peanuts |
| Which of these scientists were involved in investigating the idea of spontaneous generation? | Redi and Pasteur |
| Viruses and viroids are | obligate intracellular parasites. |
| Which if the following is TRUE regarding viruses? | They are obligate intracellular parasites. |
| The scientific name of an organism includes its | genus and species. |
| Which group(s) below contain single-celled and multicellular organisms? | Algae AND fungi |
| Weak bonds are important for the_________ structure of proteins. | secondary, tertiary, AND quaternary |
| The components of adenosine triphosphate are | adenosine, ribose, and three phosphates. |
| D-amino acids are associated with | bacterial cell walls. |
| Which statement regarding pH is CORRECT? | pH is a measure of the hydrogen ion concentration in a solution. |
| The negatively charged component of the atom is the | electron. |
| Why are electrons not considered when determining the mass of an atom? | Electrons are too light too contribute to the mass of an atom. |
| How many different amino acids are there to choose from when assembling a protein? | 20 |
| What determines the chemical and physical properties of an atom of an element? | atomic number |
| Select the FALSE statement regarding carbohydrates. | Cholesterol and ergosterol are examples of carbohydrates. |
| Which of the following correctly describes the pairing and hydrogen bonding of nucleobases in DNA? | Adenine pairs with thymine via two hydrogen bonds; cytosine pairs with guanine via three hydrogen bonds. |
| Which statement is true of nucleotides? | They are the basic subunits of DNA. |
| The -OH group in a carbohydrate | is involved in the formation of stereoisomers AND may be found above or below the plane of the ring. is involved in the formation of stereoisomers. may be found above or below the plane of the ring. is involved when linking monosaccharides together. |
| Which is the positively charged component of the atom? | proton |
| The most important molecule(s) in the world is (are)_________. | water |
| The carbohydrate(s) found in nucleic acids is (are) | ribose OR deoxyribose. |
| If you placed a DNA molecule in a vertical orientation, then from top to bottom, the two parallel strands are both oriented in the same, 5′ to 3′, direction. | false |
| Water-soluble substances easily pass through the phospholipid bilayer of a cell membrane. | false |
| The N terminal in a protein is | the end characterized by a free amino group. |
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