Local and long-distance signals in cells will trigger
changes in
a. metabolism.
b. gene expression.
c. growth.
d. development.
e. any of these.
Answer: e
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Which of the following is used during the fight-orflight
response? a. sympathetic nervous system b. parasympathetic nervous system c. norepinephrine d. sympathetic nervous system and norepinephrine e. parasympathetic nervous system and norepinephrine
Which hypothesis of aging involves mitochondria?
A. gene damage by free radicals B. external factors C. extrinsic factors D. whole-body process E. damage accumulation
The follicular phase of the menstrual cycle is the
time of a. menstruation. b. endometrial breakdown. c. endometrial rebuilding. d. oocyte maturation. e. all of these.
Figure 22.3
?
Questions refer to the above figure.
Which of the photographs in the above figure represents a seedless vascular plant?
A. A B. B C. C D. D E. Both B and C