The __________ asteroid hypothesis proposes that an asteroid impact led to the extinction of

dinosaurs. Fill in the blank(s) with the appropriate word(s).


end Cretaceous

Biology & Microbiology

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The study of hantaviruses requires biosafety level (BSL) 4 precautions

Indicate whether the statement is true or false.

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What happens to CDK in the absence of cyclin?

A. It is inactive. B. It is degraded. C. It becomes phosphorylated. D. Answers a and c are both correct.

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How do eukaryotic cells build and maintain genetic diversity?

A. through horizontal gene transfer B. through asexual reproduction C. by allowing more mutations D. through sexual reproduction

Biology & Microbiology

Bactericidal tests should be performed:

a. for severe and life-threatening infections. b. for every clinically significant organism isolated from a clinical specimen. c. for evaluation of antimicrobial agents usually considered bacteriostatic. d. for bacteria isolated from wounds, wheth-er or not they are clinically significant.

Biology & Microbiology