Which peak represents cells that contain the most DNA?
A) A
B) B
C) C
D) It cannot be determined from this figure.
Answer: C
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The largest reservoir of freshwater is the
a. atmosphere. b. glaciers. c. lakes and rivers. d. ocean.
The chemical found in tears and saliva that hydrolyzes the peptidoglycan in certain bacterial cell walls is ________.
A. hydrochloric acid B. histamine C. bile D. lysozyme E. lactic acid
Which is most likely to cause genome evolution in mammals with small population sizes?
A. Purifying selection on synonymous mutations and positive selection on non-synonymous mutations B. Accumulation of synonymous mutations and purifying selection against non-synonymous mutations C. Positive selection on nonsynonymous mutations and accumulation of synonymous mutations D. Purifying selection on synonymous mutations and an accumulation of non-synonymous mutations
A bacterial cell possesses a glycocalyx. Which of the following is FALSE?
a) It will be able to attach to surfaces. b) It will be engulfed more quickly by defensive cells of the host. c) It will be less likely to dry out. d) It will be more pathogenic.