What is a major function of potassium ions in the body?
A) activating enzymes
B) repolarization of neurons and muscle cells after action potential
C) forming hydroxyapatite salts in osseous tissue
D) maintaining osmotic pressure in the extracellular fluid (ECF)
Answer: B
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A human cell that has 47 chromosomes is
A. polyploid. B. trisomic. C. monosomic. D. euploid.
During DNA replication, which nucleotide will bind to an A nucleotide in the original or parental DNA strand?
C G U T A
The "atomic number" of an atom is determined by the number of ________ it has
A) electrons B) protons C) neutrons D) protons + neutrons E) protons + electrons
Match the term with the correct definition.A. Small change in the resting membrane potential confined to a small areaB. Charge difference across the plasma membrane when the cell is in an unstimulated stateC. Larger change in resting membrane potential that spreads over entire surface of a cellD. Membrane becomes more positive when Na+ diffuse into cellE. Return to the resting membrane potentialLocal potential
Fill in the blank(s) with the appropriate word(s).