Protein products of which genes "put the brakes" on the cell cycle when DNA is damaged or incompletely copied?

A. Checkpoint genes
B. Breakpoint genes
C. Proofreading genes
D. DNA repair genes
E. DNA reconstruction genes


Answer: A

Biology & Microbiology

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An invasive species is a species that ________.

A. spreads rapidly outside its native range and does not cause damage B. spreads rapidly outside its native range and causes damage C. spreads rapidly within its native range and causes damage D. spreads rapidly within, but not outside, its native range

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Amphipathic molecules

A. possess only hydrophilic properties. B. possess only hydrophobic properties. C. possess both hydrophilic and hydrophobic properties. D. possess neither hydrophilic nor hydrophobic properties. E. Tend not to interact with other molecules.

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Which of the following individuals would be

considered a carrier of a sex-linked recessive defect? a. a man with the defect b. a woman with the defect c. a father of a son with the defect d. the normal daughter whose father had the defect e. a son of two unaffected parents

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These are the primary cellular sites for the assembly of proteins

a. Golgi bodies b. ribosomes c. mitochondria d. lysosomes e. smooth endoplasmic reticula

Biology & Microbiology