The amount of solar energy that any spot on the
surface of the earth receives is affected by
a. the particulate matter and pollution in the air
b. the angle at which the sun strikes the earth.
c. the amount of atmosphere above the spot.
d. all of these
e. none of these.
Answer: e
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What is one potential fate for a proton in the mitochondrial matrix?
a. They are attached to NAD+ and FAD. b. They combine with oxygen to form water. c. They synthesize ATP by substrate-level phosphorylation. d. They help in the production of CO2. e. They regenerate Coenzyme A.
The ability of rats to cope with stress as adults can be affected by ____
a. a nurturing mother b. the number of siblings they have c. the temperature they are raised in d. the altitude they are born at e. their sex
Mycorrhizal fungi obtain food from plants in exchange for water and nutrients. This is an example of
A. mutualism. B. commensalism. C. herbivory. D. parasitism. E. predation.
Plant hormones
A) must be produced in large quantities to be effective. B) act on all cells they encounter. C) are chemical signals that influence growth and development. D) are rare and produced only in response to stress.