The receptor cells affected by light rays contain molecules called

A) ganglia.
B) photopigments.
C) ampullae.
D) ommatidia.
E) mechanoreceptors.


B

Biology & Microbiology

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This is a nucleotide containing molecule that is commonly used to carry electrons in the cell

A. ADP B. ATP C. NAD+ D. pyruvic acid

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Which type of interaction is not antagonistic?

A. parasitism B. commensalism C. competition D. predation E. amensalism

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An embryo sporophyte surrounded by nutritive tissue and a tough, protective outer coating makes up a(n) ____

a. pollen grain b. spore c. ovule d. seed e. strobilus

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The response to selection, R, is equal to

A) the heritability (h2) of a trait. B) the strength (S) of selection. C) the difference between h2 and S. D) S/h2. E) h2S.

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