What is a common feature of most mollusk bodies?
a. dorsal mantle
b. book lungs
c. tube feet
d. closed circulatory system
a. dorsal mantle
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Which of the following is NOT a reason for the high fidelity of the newly synthesized DNA molecule?
A. The hydrogen bonding between purines and pyrimidines is stable. B. The DNA polymerase is unlikely to form bonds between nucleotides if they are mismatched. C. The DNA polymerase has exonuclease functions. D. The DNA polymerase has the ability to change the structure of the base in order to form the correct bond
How does an auxotroph differ from a prototroph?
What will be an ideal response?
If an individual who is homozygous for type B blood marries a heterozygous type A individual, what is the chance that their first child will have type AB blood?
A) 0% B) 25% C) 50% D) 100% E) 75%
Cell-mediated immunity is a function of
A. NK cells. B. T lymphocytes. C. B lymphocytes. D. dendritic cells. E. macrophages.