It would be difficult to assess whether the drug-susceptible or drug-resistant phenotype in a population of Mycobacterium tuberculosis was more fit in an environment without antibiotics.

a. true
b. false


Ans: a. true

Biology & Microbiology

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A protein that is temporarily associated with a biological membrane is a(n):

A. transmembrane protein. B. integral membrane protein. C. peripheral membrane protein. D. transmembrane protein and an integral membrane protein.

Biology & Microbiology

Circulation in the accompanying diagram functions primarily as a(n) ____

a. an open circulatory system b. system consisting of mostly of tissue spaces c. closed circulatory system d. interstitial fluid system e. three-directional system

Biology & Microbiology

Evolution that involves changes in allele frequencies over just a few successive generations is referred to as:

a. natural selection. b. microevolution. c. macroevolution. d. stabilizing selection. e. directional selection

Biology & Microbiology

In the first step of starch digestion, starch is converted to ________, which is then digested to ________ by the enzyme maltase.

A. fat; glycerol and 3 fatty acids B. maltose; glucose C. amino acids; proteins D. glucose; maltose

Biology & Microbiology