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
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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.
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
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
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