A person who has full-blown AIDS often dies as a result of ________
A) Organ failure and subsequent transplant
B) Infectious diseases
C) Over-proliferation of T-cells
D) The HIV virus
B
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Exposure to ultraviolet light darkens skin by stimulating synthesis of
A. hemoglobin. B. cyanin. C. carotene. D. melanin.
Which of the following statements about voltage-gated sodium channels is true?
a. All cells contain voltage-gated sodium channels. b. Voltage-gated sodium channels are integral membrane proteins. c. Voltage-gated sodium channels have roughly equal permeability to Na+ and K+. d. Voltage-gated sodium channels open in response to any change in membrane potential. e. Voltage-gated sodium channels open in response to binding of acetylcholine.
_____________ is the process of converting energy in the form of light, sound, movement, or touch into a neural signal.
Fill in the blank(s) with the appropriate word(s).Fill in the blank(s) with the appropriate word(s).
There are normally a total of ________ primary teeth
A) 18 B) 20 C) 22 D) 26 E) 32