The outer and middle ear both transmit sound through _________ and the inner ear uses a _________ medium in the process of transducing sounds waves to electrical energy
a. bone; mucous
b. liquid; mucous
c. air; liquid
d. air; sodium
c
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Which of the following physical changes is associated with aging in men?
A) A loss of ability to hear low-pitched sounds B) A reduction in a man's testosterone levels C) A reduction in a man's interest in his career D) An increase in the speed at which a man gets an erection
Which part of the nervous system reacts when the human body is subjected to stress?
a. parasympathetic b. somatic c. sympathetic d. central e. endocrine
Which of the following is an advantage of longitudinal research?
a. It takes a relatively short period of time. b. It is quite flexible. c. It can measure stability of behavior. d. It is extremely practical.
Humans have about __________ genes
a) 50,000 b) 25,000 c) 100,000 d) 10,000