Net primary productivity is the
a. rate of photosynthesis.
b. rate of energy flow.
c. amount of energy stored in the ecosystem.
d. amount of energy utilized.
e. amount of energy stored in the plant tissue in excess of that used by autotrophs in
respiration.
E
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If cells are grown in a medium containing radioactive 35S, which of these molecules will be labeled?
A) phospholipids B) nucleic acids C) proteins D) amylose E) proteins and nucleic acids
A man with pattern baldness and a woman who has no baldness have a son who develops pattern baldness. Their son has a daughter who also develops pattern baldness. They determine that her expression of this trait is not a symptom of a medical condition. If her mother does not have pattern baldness, the daughter's genotype is ________ and her mother's genotype is _____________.
A. BB, bb B. BB, Bb C. bb, BB D. Bb, Bb E. bb, Bb
The most serious consequence of rubella is
A. encephalitis. B. meningitis. C. deafness. D. birth defects.
The hormones secreted by the anterior pituitary are ____
a. peptide hormones b. neurotransmitters c. steroid hormones d. second messengers e. polar