Which hormone is associated with the biological clock?
a. insulin
b. growth hormone
c. melatonin
d. cortisol
e. prostaglandins
C
Biology & Microbiology
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Based on molecular analyses, scientists now believe the domestication of the closest relatives of modern dogs began
between ____ years ago.
a. 800 and 1,200 b. 1,000 and 3,000 c. 4,000 and 8,000
d. 9,000 and 12,000 e. 18,800 and 32,100
Biology & Microbiology
Movement of substances that requires the
expenditure of ATP molecules is
a. facilitated diffusion. b. simple diffusion. c. active transport. d. osmosis. e. bulk flow.
Biology & Microbiology
Which one of the following is the only domain that contains eukaryotes?
A) Animalia B) Plantae C) Archaea D) Eukarya
Biology & Microbiology
In a gymnosperm, pollen is produced in the male ____ and is transported by the wind to the female cone.
A. anther B. stamen C. cone D. pistil
Biology & Microbiology