Which of the following traits are considered to be inheritable?
A. bleached hair
B. calluses on fingers
C. the ability to speak Spanish
D. eye color
Answer: D
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The antimicrobial aspect(s) of the skin is/are
A. dryness. B. saltiness. C. acidity. D. toxicity. E. All of the choices are correct.
Four of the five vitamins listed below are members
of the B-complex vitamins. Select the exception. a. ascorbic acid b. folic acid c. pantothenic acid d. riboflavin e. thiamine
What axonal characteristic facilitates the propagation of an action potential along a myelinated axon?
a. Voltage-gated Na+ and K+ channels are concentrated in the myelinated axonal segments. b. Voltage-gated Na+ and K+ channels are concentrated in the unmyelinated axonal segments. c. Voltage-gated Na+ channels are concentrated in the myelinated axonal segments; voltage-gated K+ channels are concentrated in the unmyelinated axonal segments. d. Voltage-gated K+ channels are concentrated in the myelinated axonal segments; voltage-gated Na+channels are concentrated in the unmyelinated axonal segments. e. Voltage-gated Na+ K+ channels are spread evenly throughout both myelinated and unmyelinated segments
In the prodromal phase, symptoms
A. are at their height B. have not developed yet and there is no sign of disease C. have begun to disappear D. indicate the host has accumulated antibodies and memory lymphocytes that prevent reinfection E. may include nausea, fever, and headache