The term N-terminus refers to the presence of a(n) ________ at the 5? end of a polypeptide.
A. oxygen atom
B. carboxyl group
C. amino group
D. carbonyl group
E. sulfate group
C. amino group
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If seed germination took place in 100% of plants at the 1.0 mg/mL concentration, and no germination was observed at the 0.1 mg/mL concentration, how would you modify a second experiment to determine the actual effective concentration?
What will be an ideal response?
Directional selection is demonstrated in
a. the color of peppered moths in England. b. the development of resistance to insecticides. c. the development of resistance to antibiotics. d. the coat color of rock pocket mice in Arizona. e. all of these.
When graphing a distribution of phenotypes for a continuous trait, a broad curve implies
A) little variation in the phenotypes. B) a large standard deviation. C) a small variance. D) a large correlation coefficient. E) a zero regression line slope.
Which structures could be considered blood reservoirs?
a. veins b. arterioles c. capillaries d. arteries