In this reaction, ethanol represents the
a. enzyme.
b. substrate.
c. product.
d. activation energy.
e. trigger
B
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In general, in a sample of n individuals, the frequency of an allele is
A. the number of occurrences of the allele. B. the number of occurrences of the allele divided by n. C. the number of occurrences of the allele divided by twice the number of individuals in the sample (2n). D. twice the number of occurrences of the allele divided by n.
Where would one expect to find the most telomerase?
A. male germ cells that give rise to gametes. B. skin cells from a 60-year-old individual. C. skin cells from a 2-year-old individual. D. a nerve cell from a 60-year-old individual. E. a nerve cell from a 2-year-old individual.
The lobster mushroom results when a fungus acts as a parasite to
a. cow dung. b. a fungus. c. plants. d. skin
What compound diffuses through open stomata into plant tissues thereby initiating photosynthesis?
a. water molecules b. oxygen gas c. carbon dioxide d. potassium ions e. calcium ions