What are the proteins that catalyze chemical reactions in the body?

A) enzymes
B) coenzymes
C) antioxidants
D) high-density lipoproteins (HDLs)


A

Biology & Microbiology

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The cardiac, pyloric, anal, and ileocecal sphincters are all part of the

(a) digestive tract. (b) respiratory tract. (c) circulatory system. (d) muscular system.

Biology & Microbiology

During prokaryotic cell division, two chromosomes separate and are distributed to the two ends of the cell by ____

a. the action of the mitotic spindle b. an unknown mechanism c. attachment to actin d. attachment to separating membrane regions e. formation of a newly made cell wall

Biology & Microbiology

What does inhibin inhibit?

a. estrogen production b. LH production c. FSH production d. testosterone production

Biology & Microbiology

The base analog 5-bromouracil can tautomerize. One tautomer behaves like thymine and the other behaves like cytosine. If 5-bromouracil is used as a mutagen, what is the minimum number of times replication must occur to mutate the codon for proline (CCC) into the codon for serine (TCC)?

A) one generation B) two generations C) three generations D) 5-bromouracil cannot induce this mutation

Biology & Microbiology