There are many chemicals and brain areas that contribute to feeding and satiety. Why might this be?
A. Humans are the evolutionary combination of many different systems from lesser evolved organisms.
B. So that humans will always be tempted to consume sugar.
C. Because if humans are well fed, they will be able to reproduce more.
D. So that if one part of the system gets disrupted, compensation can occur to not disrupt eating behavior.
Answer: D
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During sleep, when are brain activity and muscle activity least? a. Both brain activity and muscle activity are least during Stage 4 sleep
b. Both brain activity and muscle activity are least during REM. c. Brain activity is least during REM and muscle activity is least during Stage 4 sleep. d. Brain activity is least during Stage 4 sleep and muscle activity is least during REM.
Which activity is the best example of functional play?
A. skipping or jumping B. playing checkers C. counting items such as cookies to see how many there are D. using Lego to build objects
Yan has never seen a zebra. While watching a television show on animals, a zebra is shown and Yan says, “Look at the horse.” According to Piaget, Yan is engaging in ____.?
a. ?assimilation b. ?accommodation c. ?formal operations d. ?concrete operations
The yolk sac __________
A) forms during the third trimester of pregnancy B) is the outer ring of cells that surrounds the blastocyst C) produces blood cells until the organs are mature enough to take over this function D) contains one large vein that delivers blood loaded with nutrients and two arteries that remove waste