Harvey takes the drug Viagra. How does the drug help produce erections for Harvey?
a. It removes blockages in blood vessels that serve Harvey's penis.
b. It increases Harvey's sexual drive.
c. It relaxes blood vessels in Harvey's penis, allowing them to expand.
d. It triggers contractions of orgasmic muscles.
e. It stimulates the release of Harvey's seminal fluid.
c
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Frequency theory cannot explain the fact that we can hear frequencies higher than 1,000 Hz because __________
a) the neurons linked to hair cells cannot fire more than 1,000 times per second. b) the neurons linked to hair cells cannot fire less than 1,000 times per second. c) different areas of the basilar membrane vibrate at frequencies greater than 1,000 Hz. d) different areas of the basilar membrane vibrate at frequencies less than 1,000 Hz.
If a child has a performance motivation and fails at a task, what is the most likely result, according to Carol Dweck:
a. The child will persist until success is achieved. b. The child will become emotionally unstable and probably have a tantrum. c. The child will quit trying and self-esteem will suffer. d. The child will persist, even when persistence continues to result in failure.