A genetic disease characterized by the inability to produce melanin is ________.
A. psoriasis
B. dermatitis
C. melanoma
D. albinism
E. cyanosis
Answer: D
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In the formula v2 = v1 , what is known about acceleration?
A. acceleration = -9.81 m/s2 B. acceleration = 0 C. both A and B D. need more information
Which of the following is greater?
A) the concentration of calcium ion in the sarcoplasmic reticulum of a resting muscle B) the concentration of calcium ion in the sarcoplasm of a resting muscle
The action potential of cardiac pacemaker cells is caused by ________.
A. inward diffusion of K+ B. inward diffusion of Na+ C. outward diffusion of K+ D. inward diffusion of Ca2+
What reaction does pepsin catalyze?
A. Breakdown of proteins into peptides B. Breakdown of starches into disaccharides C. Breakdown of glucose to glycerol D. Breakdown of fats to fatty acids E. Breakdown of dipeptides to amino acids