The general functions of the plasmalemma include
A) structural support of the cell.
B) sensitivity to changes in the extracellular fluid.
C) physical isolation of the cell contents from the extracellular fluid.
D) regulation of exchange of materials with the environment.
E) All of the answers are correct.
E) All of the answers are correct.
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Which peritoneal fold supports the large intestine?
A. Lesser omentum B. Peritoneal ligament C. Falciform ligament D. Mesocolon E. Greater omentum
During synaptic transmission,
A) The frequency of the action potential is directly correlated with neurotransmitter release. B) The frequency of the action potential is inversely correlated with neurotransmitter release. C) The intracellular concentration of Ca2+ remains stable because of intracellular buffers. D) The concentration of Ca2+ is inversely related to the amount of neurotransmitter released.
Proteins that are recaptured from tubular fluid are transported into the luminal membrane by way of
A. diffusion. B. pinocytosis. C. secondary active transport with a symporter. D. primary active transport with a protein pump. E. facilitated diffusion with a carrier.
The single most abundant protein in the body is ________.
A) DNA B) hemoglobin C) collagen D) glucose