Term
True or False
Protiens are used as energy sources only when carbohydrates and lipids are not available |
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| Organisms that are damaged by the normal atmospheric levels of oxygen (20%) but require oxygen levels of 2-10% for growth are called |
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| Carbon dioxide is a by product of which of the following |
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| viral capsids are generally constructed without any outside aid once the subunits have been synthesized. this process is called |
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| the breakdown of larger more complex molecules into smaller,simpler ones with the release and trapping of some energy contained within those molecules is called |
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| Which of the following would NOT be bacterostatic |
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| During the intracellular state, a virus exists soley as a |
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| which of the following organisms would be most likely to contaminate a jar of pickles |
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| Taken together the sum total of all chemical reactions occuring in a cell is called |
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| spontaneous mutations result from exposure to physical and chemical agentsq |
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| antimicrobial agents that interfere with nucleic acids also stop protein synthesis because |
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| nucleic acids are involved in the production of proteins; ribosome contains ribozymes; proteins are involved in the production of nucleic acids |
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| in the labratory you isolated an organism which exhibits these characteristics; it uses glucose to form lactic acid & it gorws only in the absence of oxygen. this organism is... |
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| all of the following are true statements regarding fermentation EXCEPT |
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| ethanol and lactic acid are possible substrates |
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| a ___________mutation does not alter the amino acid sequence of the resulting protein |
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| the microbial formation of alcohol from sugar is known as |
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| lethal mutations can be recovered in haploid organisms if they are |
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| which of the following individuals pioneered the use of chemicals to the reduce the incidence of infections during surgery |
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| enzymes that are expressed at a constant level all the time are said to be... |
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| a strain of organisms whose nutritional requirements exceed those of the corresponding wild type strain is called an |
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| which of the following would be used to sterilize a mattress |
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| the synthesis of colplex molecules from simpler ones with the input of energy is called |
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| a strain of organisms whose nutritional requirements do not exceed those of the corresponding wild type strain is called |
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| which is not true of viruses |
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| viruses replicate by binary fission |
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| a chemical agent that kills pathogenic microbes in general is |
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| enzyme activity can be grately affected by the PH and termperature of the environment in which the enzyme must function |
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| the type of antimicorbial drug that would be least toxic to humans is a drug that |
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| inhibits the synthesis of the cell wall |
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| organisms that obrain energy from the oxidation of either organic or inorganic compounds are called |
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| during replication of the 2 strands of DNA molecule are unwound from one another by enzymes called |
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| the length of the lag phase of growth can vary depending on the |
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Definition
| nature of the growht medium; the temperature; the condition of the microorganism |
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| amino acids and lipids can be sources of energy and carbon for cells by |
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| mutagens are physical or chemical agents that cause mutation |
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| foods such as sauerkraut and dill pickles inhibit bacterial contamination because of the effects of these foods' |
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| what best describes respration |
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| the complete catabolism of glucose to CO2 and H2O |
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| which is true of viruses in the extracellular phase |
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Definition
| they behave as a macromolecular complex and are no more alive than are ribosomes |
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| organisms that do not require oxygen for growht but grow better in its presence are called |
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| in addition to coding for the amino acid methionine, what function does the codon AUG serve |
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| tap water is used sometimes to prepare growth media in the laboratory because |
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| it provides microbes with the necessary trace elements |
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| induced mutations result from exposure to physical or chemical agents |
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| betadine is an example of which of the following |
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| in microbiology the term "growth" usually refers to which of the following |
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| an increase in the number of microbial cells |
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| another term for the logarithmic growth of bacterial cells is |
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| viruses with single-stranded RNA as their genome for which the base sequence is the same as the viral mRNA are said to be |
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| positive (+) strand viruses |
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| bacterial mitochondria generate ATP |
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| DNA molecules that enter a bacterium by one of several mechanisms is called |
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| which of the following does NOT happen during the Krebs cycle |
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| which best describes the energy source of a chemoorganotroph |
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| human pathogens are classified as |
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| fermentation involves the use of pyruvate and/or other organic molecules as electron acceptors |
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| after an F+ X F mating, the donor remains_____________and the receipient becomes__________ |
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| organisms that use reduced, preformed organic molecules as carbon sources are |
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| the dairy creamer used in restaurants is usually sterilized by |
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| large numbers of small monomeric molecules join together to form large molecules that are known as |
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| the first surgical antiseptic to be used was |
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| all of the following are true of fungi EXCEPT |
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| elements that are required in relatively large amounts by microorganisms are called |
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| produces ATP by substrate level phosphorylation; it is a pathway common to both respiration and fermentation; it occurs in the cytoplasm; it uses as well as produces ATP |
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| the Y shaped part of the DNA molecule where the actual replication process occurs is called the replication |
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| viruses with single standed RNA as their genome for which the base sequence is not the same as the viral mRNA are said to be |
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| negative (-) strand viruses |
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| which of the following can serve as phage receptor sites |
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| membrane proteins, pili, lipopolysaccharides and teichoic acids |
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| an enviroment that furnishes only inorganic salts and organic compounds as final electron acceptors cannot support |
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| a genome of a recipient cell is called a |
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| speed up the rate of reactions; are specific for their substrate; made up of amino acids |
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| prokaryotic cell wall is made of cellulose |
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| in the process of transformation |
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| cells take up dna from their environment |
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| which of the following groups of drugs can become incorporated into the bones and teeth of a fetus |
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