Infants who are breast-fed are ____ to die from diarrhea than infants who are bottle-fed
a. less likely
b. more likely
c. equally likely
d. more quickly going
A. Due to sanitation of the water, infants are less likely to die from diarrhea if they are breast-fed.
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One of the key ideas behind the gate-control theory of pain is that:
a. impulses generated by pain receptors can be blocked in the spinal cord by signals originating in the brain b. hormones can effectively block the signals of certain neurotransmitters that signal pain c. pain signals in the brain can be blocked by opposing signals generated in the spinal cord d. the reticular system can generate signals that will block pain signals as they cross the pons in the lower brain
General knowledge of history, algebra, and literature refers to __________ memory
a. procedural c. general b. episodic d. semantic
To decide whether a specific research proposal is ethical, internal review boards (IRBs) always consider both "risks" and "benefits." What general rule regarding risks and benefits do IRBs apply?
A) The risk to benefit ratio in research must be at least 1:2, meaning that the benefits must be at least twice as great as the risks. B) All risks and benefits likely to arise as a result of participation in a study must be fully explained to participants prior to their participation. C) Any benefits that are likely to arise as a result of participation in a study must outweigh all of the risks. D) The benefits of education in an experiment must outweigh any risks of coercion.
How many stages are in REM sleep?
a) one b) two c) three d) four