If a human body has an insufficient supply of oxygen, the skeletal muscle cells may switch from cellular respiration to which of the following?
a. alcoholic fermentation
b. photosynthesis
c. lactic acid fermentation
d. metabolism
c. lactic acid fermentation
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What is separase?
A. A protein that marks a protein called securin for destruction. B. A protein that is part of the cohesin complex. C. A protein that destroys cohesin through its protease activity. D. A protein that targets the mitotic cyclin for degradation.
Which of the following molecules coordinates the expression of nonadjacent genes?
A) leucine zippers B) response elements C) transcription factors D) coactivators E) control elements
The most accurate description of SPATIAL summation is
A. Several inputs from the SAME presynaptic cell arrive in rapid succession, summing into a larger depolarization that brings the neuron over the threshold for an action potential. B. Several inputs from DIFFERENT presynaptic cells create EPSPs that sum together to bring the neuron over the threshold for an action potential.
The pattern of distribution for a certain species of kelp is clumped. The pattern of distribution for a population of snails that live on the kelp would be
A) clumped. B) random. C) uniform.