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BIOL-2460 EXAM 3 STUDY QUESTIONS AND CORRECT ANSWERS
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  • BIO 2460
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  • BIO 2460

Which of the following is not a major element of a microbial cell? a. nitrogen b. oxygen c. copper d. hydrogen e. carbon c Surfactants work by A. Coating the organism preventing interaction with its environment B. Blocking transport into the organism C. Blocking transport out from the organism D...

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  • October 1, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • biol 2460 exam 3 study questions and correct answe
  • which of the following is not a major element of a
  • when microbes are in a close nutritional relations

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  • BIO 2460
  • BIO 2460

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BIOL-2460 EXAM 3 STUDY QUESTIONS
AND CORRECT ANSWERS
Which of the following is not a major element of a microbial cell?

a. nitrogen
b. oxygen
c. copper
d. hydrogen
e. carbon ✅c

Surfactants work by

A. Coating the organism preventing interaction with its environment
B. Blocking transport into the organism
C. Blocking transport out from the organism
D. Disrupting membrane integrity
E. All of the choices are correct ✅d

Base pairs in DNA are held together by __________ bonds.

a. sulfhydryl
b. polar covalent
c. nonpolar covalent
d. hydrogen
e. peptide ✅d

When microbes are in a close nutritional relationship, and one benefits but the other is
not harmed, it is called:

a. satellitism
b. commensalism
c. symbiosis
d. mutualism
e. synergism ✅b

Aerobic respiration is an example of _____________?

a. chemoheterotrophy
b. photoheterotrophy
c. photosynthesis
d. chemoautotrophy
e. methanoheterotrophy ✅a

, The phase of the bacterial growth curve in which the rate of multiplication equals the
rate of cell death is the:

a. log phase
b. lag phase
c. stationary phase
d. death phase
e. telophase ✅c

A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and
then incubates each drug dilution with a standard amount of a patient's isolated
pathogen. What is this microbiologist setting up?

a. MIC test
b. E-test
c. therapeutic index (TI)
d. antibiogram
e. Kirby Bauer technique ✅a

Which of the following types of control agents would be used to achieve sterility?

a. fungicide
b. bactericide
c. germicide
d. virucide
e. sporicide ✅e

An ideal antimicrobial therapeutic drug exhibits all of the following characteristics except
____________:

a. non-toxic to host
b. easily broken down by host
c. easily administered
d. limited capacity to elicit resistance
e. non-allergenic ✅b

Synthesis of an inducible enzyme requires:

a. repressor alone bound to operator
b. substrate bound to promoter
c. substrate bound to repressor
d. corepressor and repressor binding to operator ✅c

The movement of substances from lower to higher concentration across a
semipermeable membrane that must have a specific protein carrier and cell expenditure
of energy is called:

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