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Other quiz:

Circulatory / Respiratory › View

The “lub,” or first heart sound , is produced by the closing of

A. the aortic semilunar valve

B. the pulmonary semilunar valve

C. the tricuspid valve

D. the bicuspid valve

E. both AV valves

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Mutations, Replication, and Cancer › View

DNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?

A. Half of each new DNA is the old DNA

B. The old strand of DNA was digested, so none

C. The new DNA is entirely made up of the old DNA

D. About every sixth base comes from the old DNA

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