Which platelet hormone aids in the prevention of blood loss?

a. ATP
b. serotonin
c. heparin
d. fibrinogen
e. thrombin


ANSWER: b

Biology & Microbiology

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Two different nucleic acids can ________ by annealing at their complementary sites.

A. covalently bond B. hybridize C. ligate D. form a peptide bond

Biology & Microbiology

NADH serves as an electron carrier that can donate its hydrogen to other molecules.

a. true b. false

Biology & Microbiology

A point mutation changes a codon from UCG to UAG. What will happen to the resulting polypeptide?

What will be an ideal response?

Biology & Microbiology

Closure of the Na+ channel inactivation gate is responsible for the ______ refractory period.

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

Biology & Microbiology