Proteins are polymers formed of structural units called:
A. fatty acids.
B. amino acids.
C. nucleotides.
D. phosphate groups.
E. monosaccharides.
B. amino acids.
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The change in the chromosome depicted between the top and the bottom in the accompanying figure represents a(n)
____.
a. inversion b. duplication c. reciprocal translocation d. deletion e. Philadelphia chromosome
Four of the five choices below are innate
immune responses. Select the EXCEPTION.
a. antibody production b. phagocytosis c. complement action d. inflammation e. fever
Between meals
a. the pancreas secretes glucagon. b. liver cells convert stored glycogen to glucose. c. the brain continues to receive adequate glucose. d. fatty-acid conversions supply about half of the ATP needed by muscle and liver cells. e. all of these occur.
Which of the following is true of embryo cloning?
a. It occurs all the time in nature. b. It involves the genetic contribution of only one parent. c. It produces identical offspring. d. “Artificial twinning” is a laboratory application of the process. e. All of these are true.