Term
| Which of the following statements about photophosphorylation is false? |
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Definition
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| A strictly fermentative bacterium produces energy |
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Definition
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Term
| Which of the following statements about beta oxidation is false? |
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Definition
| B) It involves the formation of 2-carbon units. |
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Term
| In noncyclic photophosphorylation, O2 is produced from |
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Definition
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Term
| Which of the following uses CO2 for carbon and H2 for energy? |
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Definition
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Term
| Cyanobacteria are a type of |
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Definition
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Term
| Beggiatoa bacteria get energy by oxidizing S2- to S6+. This means they take ___ for their ___. |
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Definition
| electrons; electron transport chain |
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Term
| The term facilitative anaerobe refers to an organism |
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Definition
| uses oxygen or grows w/o oxygen |
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Term
| Which of the following is an advantage of the standard plate count? |
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Definition
| Determines the number of viable cells |
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Term
| Thirty-six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in the original sample? |
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Definition
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Term
| Most bacteria grow best at pH: |
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Definition
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Term
| A culture medium consisting of agar, human blood, and beef heart is a: |
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Definition
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Term
| Which of the following statements define generation time the best? |
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Definition
| The length of time needed for a cell to divide |
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Term
| Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt? |
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Definition
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Term
| Patients with indwelling catheters are susceptible to infections because: |
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Definition
| Biofilms develop on catheters. |
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Term
| Which of the following is the best method to sterilize heat-labile solutions? |
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Definition
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Term
| Which of the following best describes the pattern of microbial death? |
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Definition
| B) The cells in a population die at a constant rate. |
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Term
| Which of the following substances can sterilize? |
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Definition
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Term
| Iodophors differ from iodine (I2) in that iodophors: |
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Definition
A) Don't stain.
B) Are less irritating.
C) Are longer lasting.
D) Are combined with a nonionic detergent.
E) All of the above. <----- |
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Term
| Which of the following affects the elimination of bacteria from an object? |
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Definition
A) Number of bacteria present
B) Temperature
C) pH
D) Presence of organic matter
E) All of the above <---- |
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Term
| Which of the following could be used to sterilize plastic Petri plates in a plastic wrapper? |
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Definition
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Term
A disk-diffusion test using Staphylococcus gave the following results:
Table 1.
Which compound was the most effective against Staphylococcus? |
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Definition
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Term
| In Table 1, which compound was the most effective against E. coli? |
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Definition
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Term
| Which of the following will NOT destroy prions? |
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Definition
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Term
| If you were preparing nutrient agar at home and didnt have an autoclave, what could you use to sterilize the nutrient agar? |
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Definition
| A) Pressure cooker at 121°C for 15 minutes |
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Term
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Definition
| C) Two strands of nucleotides running antiparallel. |
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Term
| Which of the following is NOT a product of transcription? |
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Definition
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Term
| An enzyme produced in response to the presence of a substrate is called: |
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Definition
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Term
| According to the operon model, for the synthesis of an inducible enzyme to occur, the |
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Definition
| C) Substrate must bind to the repressor. |
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Term
| Synthesis of a repressible enzyme is stopped by: |
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Definition
| E) The corepressor-repressor binding to the operator. |
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Definition
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Table 2
If the sequence of amino acids encoded by a strand of DNA is serine-alanine-lysine-leucine, what is the order of bases in the template strand of DNA?
Use Table 2 for reference |
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Definition
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Term
| (Use Table 2) The anticodon for valine is: |
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Definition
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Term
(Use Table 2) What is the sequence of amino acids encoded by the following sequence of bases in a strand of DNA?
3 ATTACGCTTTGC |
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Definition
| D) Transcription would stop at the first codon |
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Term
Figure 4
In Figure 4, which model of the lac operon correctly shows RNA polymerase, lactose, and repressor protein when the structural genes are being transcribed? |
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Definition
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