Most members of the phylum Platyhelminthes

a. are free-living.
b. exhibit radial symmetry.
c. do not show cephalization.
d. are of a single sex.
e. are parasites.


E

Biology & Microbiology

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Ligand binding to a receptor kinase results in:

A. phosphorylation of the cytoplasmic domain of the receptor. B. binding of cytoplasmic signaling molecules. C. receptor dimerization. D. All of these answer options are correct.

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All living things

1.use protein as their genetic material. 2.engage in metabolic activity. 3.require oxygen. 4.are made up of more than two cells.

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Rubisco, G3P, and NADPH all play a role in

-the light reactions of photosynthesis. -the Calvin cycle of photosynthesis. -the breakdown of glucose into CO2 -cellular respiration when is O2 -alcohol fermentation.

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Identify the form of nonionizing radiation from the list below:

A) gamma rays B) X rays C) cathode rays D) ultraviolet rays

Biology & Microbiology