How do cells overcome the energy requirement of endergonic reactions?
a. coupling ATP synthesis with phosphorylation reactions
b. coupling endergonic and exergonic reactions
c. coupling endothermic and endergonic reactions
d. coupling ATP transport with endergonic reactions
e. coupling ATP synthesis with endergonic reactions
ANSWER: b
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A. None of the answer options is correct. B. The posterior pituitary gland develops from epithelial cells. C. Both the anterior and posterior pituitary glands release tropic hormones. D. Neurosecretory cells of the hypothalamus extend axons to the anterior pituitary gland. E. The posterior pituitary gland produces more types of hormones than the anterior pituitary gland.
The rash of secondary syphilis
A. can last for months. B. does not impair function. C. causes severe itching. D. only lasts a few days. E. is intensely painful.
The lichen shown here is an example of ____
a. competition b. parasitism c. predation d. commensalism e. mutualism
What are considered to be the two most important factors that have been involved in past mass extinctions?
a. disease and parasites b. fire and weather events c. glaciers and earthquakes d. environmental and biological factors e. plate tectonics and climatic factors