In the human growth sequence, which of the following is a CORRECT match between the period and age range?
a. embryonic------first two weeks after conception
b. neonatal---------two to eight weeks after conception
c. fetal-------------eight weeks after conception to birth
d. germinal--------from birth to a few weeks after birth
ANSWER: c
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Why are investigators interested in the fast flush phenomenon?
a. It is often seen in people of Asian ancestry and might explain why they drink less. b. It is often seen in people of Asian ancestry and might explain why they drink more. c. It is often seen in young people and might explain why they drink more. d. It is often seen in females and might explain why they drink less.
____ involves the study of the impact that evolution may have on the behavior of humans
a. Ethology b. Ecology c. Natural selection d. Imprinting
When an action potential reaches an axon terminal, calcium
A. rushes into the cell immediately, because this negatively charged ion is attracted to the now-positive environment of the axon terminal B. rushes out of the axon terminal, because this positively charged ion is repelled by the now-positive environment of the axon terminal. C. leaves the axon terminal as the action potential recedes, because that is when the calcium channels begin to open. D. enters the axon terminal as the action potential recedes, primarily due to diffusion.
One single nonverbal cue cannot be reliably interpreted to mean the same thing across situations
a. True b. False