Macromolecules are broken down to monomers in ___
A. dehydration reactions.
B. denaturation reactions.
C. hydrolysis reactions.
D. anabolic reactions.
C. hydrolysis reactions.
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The "threshold" potential of a membrane is the _____
A) point of separation from a living to a dead neuron B) lowest frequency of action potentials a neuron can produce C) minimum hyperpolarization needed to prevent the occurrence of action potentials D) minimum depolarization needed to operate the voltage-gated sodium and potassium channels E) peak amount of depolarization seen in an action potential
A common food intoxication is caused by enterotoxin-producing strains of ________.
A. Staphylococcus epidermidis B. Staphylococcus saprophyticus C. Streptococcus agalactiae D. Staphylococcus aureus E. Streptococcus pyogenes
Which of the following would make a human disorder-causing allele or gene easiest to locate?
A) a genomic library for the chromosome on which the gene is located B) a cDNA library for the chromosome on which the gene is located C) a group of 10 known candidate genes D) a transposon known to segregate with the gene E) a single patient with a chromosomal translocation associated with the gene
The responses observed in type IV hypersensitivities result from the action of
A) IgE antibodies and mast cells. B) T cells and phagocytes. C) IgG and complement. D) autoantibodies. E) inflammatory chemicals.