Pigs have feet with toes that do not touch the ground. These toes are examples of ____
a. vestigial structures
b. evolving structures
c. homologous traits
d. deleterious mutations
e. biological gradualism
ANSWER: a
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All of the following are the result of B cell maturation and activation EXCEPT
A. antibody is produced. B. macrophages are activated. C. plasma cells are produced. D. memory cells are produced.
Glycolysis and the Krebs cycle do not capture all of the energy in a glucose molecule because
A. ATP easily vaporizes. B. energy cannot be created or destroyed. C. some glucose is not broken down. D. some energy is always lost as heat during chemical reactions. E. some energy remains in the atoms.
Which is true about DNA replication?
A. It is semiconservative. B. It starts at an origin of replication. C. It is bi-directional. D. It requires RNA primers. E. All of the choices are correct.
Adaptive immunity is also referred to as ____ immunity
a. acquired b. innate c. secondary
d. latent e. hidden