Which molecule binds ATP in order for muscle contraction to occur?
a. sarcolemma
b. actin
c. myosin
d. calcium
e. phosphate
c
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The zona pellucida consists of
A. epithelium. B. glycoprotein. C. nucleic acid. D. adipose tissue.
Which of the following tissues serve as a barrier to microbial infections?
A. Epithelial B. Nervous C. Connective D. Muscular
The clitoris and penis both become erect upon sexual arousal. What accounts for this similarity?
A) The clitoris and penis are both partially shrouded by a prepuce. B) The clitoris and penis develop from the same embryonic tissue. C) The clitoris and penis are homologous structures. Both have columns of erectile tissue. D) The clitoris and penis are avascular, cylindrical structures.
Which of the following is not a function of the skin?
A. Synthesis of vitamin C B. Retention of water C. Sensation of pain, temperature, and pressure D. Facial expression E. Thermoregulation