Built-in checkpoints ____ stop the cell cycle from proceeding if certain conditions are not met

a. before and after G1 phase
b. during S phase
c. before G2 phase
d. before and after S phase
e. before anaphase


ANSWER: a

Biology & Microbiology

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A.  all eukaryotes and a few prokaryotes. B.  animals and plants only. C.  eukaryotes only. D.  protists, plants, and animals. E.  prokaryotes and protists.

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For a molecule to be reduced, it gains electrons from the environment. How else is a molecule reduced?

a. gaining hydrogen atoms b. losing hydrogen atoms c. gaining oxygen atoms d. losing oxygen atoms e. both losing hydrogen atoms and gaining oxygen atoms

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Linked genes do not follow the typical patterns of inheritance

a. true b. false

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