Regulation of physiological drives is controlled by the:
A. medulla.
B. temporal lobes.
C. hippocampus.
D. limbic system.
D
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O2 is transported from air in the lungs into the blood through the process of ____
a. active transport b. simple diffusion c. facilitated diffusion d. osmosis e. active transport
The secondary response in the B cell response occurs when memory cells bind to ________
A) antibodies B) antigens C) histamine D) defensive proteins
Using traditional cross-breeding techniques, scientists have been able to create featherless chickens. Which situation has not been a problem with featherless chickens?
A) Featherless chickens are unusually vulnerable to mosquito attacks. B) Featherless chickens are unusually vulnerable to parasites. C) Featherless chickens have difficulty mating. D) Featherless chickens are ultra-sensitive to sunlight. E) Featherless chickens have trouble digesting corn.
If an arteriole has a radius of 64 micrometers (?m) and a capillary in the same organ has a radius of 8 ?m, what is the difference in resistance in blood flow between the two?
A. The resistance in the arteriole is 96 times the resistance in the capillary. B. The resistance in the capillary is 48 times the resistance in the arteriole. C. The resistance in the arteriole is 6 times the resistance in the capillary. D. The resistance in the arteriole is 48 times the resistance in the capillary. E. The resistance in the capillary is 6 times the resistance in the arteriole. F. The resistance in the capillary is 96 times the resistance in the arteriole.