Question 1

Refer to Figure 8.2. If base 4 is adenine, what is base 4' on the complementary strand?

Accepted Answer

thymine

Question 2

Refer to Figure 8.3. If compound C binds to the allosteric site of enzyme A, which regulatory mechanism is being demonstrated?

Accepted Answer

feedback inhibition

Question 3

Based on Table 8.3, prostate cancer is most likely the result of which type of mutation?

Accepted Answer

missense

Question 4

Refer to Figure 6.1. Which line best depicts the growth of an obligate aerobe incubated anaerobically?

Accepted Answer

c

Question 5

Refer to Figure 6.2. In which section does the number of cells dying equal the number of cells dividing?

Accepted Answer

c

Question 6

Refer to Figure 6.3. Which tube shows the expected growth pattern for a facultative anaerobe?

Accepted Answer

b

Question 7

A culture medium consisting of agar, peptone, and beef heart is classified as which type of medium?

Accepted Answer

complex medium

Question 8

If a bacterial culture starts with 4 cells and ends with 128 cells, how many generations have occurred? Use the formula $$n = \frac{\log N_t - \log N_0$}{\log 2}$$, where $$N_t is $$the final number of cells and $$N_0 is $$the initial number.

Accepted Answer

6

Question 9

Which of the following is NOT a direct method to measure microbial growth?

Accepted Answer

metabolic activity

Question 10

Which of the following statements about viral spikes is FALSE?

Accepted Answer

They are found only on nonenveloped viruses.

Question 11

A viroid is best described as:

Accepted Answer

an infectious piece of RNA without a capsid

Question 12

Which of the following is necessary for replication of a prion?

Accepted Answer

PrPSc

Question 13

Which of the following is an example of a metabolic activity that could be used to measure microbial growth?

Accepted Answer

glucose consumption

Question 14

Which of the following is the best definition of generation time?

Accepted Answer

the length of time needed for a cell to divide

Question 15

Which of the following is NOT used as a criterion to classify viruses?

Accepted Answer

biochemical tests

Question 16

Which of the following statements about viruses is FALSE?

Accepted Answer

Viruses use their own catabolic enzymes.

Question 17

Which of the following is an organic growth factor?

Accepted Answer

vitamin B1

Question 18

During which growth phase will gram-positive bacteria be most susceptible to penicillin?

Accepted Answer

log phase

Question 19

Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt?

Accepted Answer

facultative halophiles

Question 20

Which of the following is the correct order for DNA-virus replication?

Accepted Answer

2. DNA synthesis; 3. Transcription; 4. Translation; 1. Maturation

Microbial Genetics and Growth: Step-by-Step Study Guidance

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