An action potential
A. occurs when the local potential reaches threshold level.
B. is not propagated.
C. has no repolarization phase.
D. is an example of negative feedback.
E. can be of varying strengths depending on strength of the stimulus.
A
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Goblet cells create about 3 ounces of mucus per day, which is removed by the cilia.
Answer the following statement true (T) or false (F)
A hematocrit primarily measures the volume of ________
A) white blood cells B) red blood cells C) platelets D) oxygen
Anaerobic glycolysis requires ________ to make ATP
A) creatine phosphate only B) oxygen only C) glucose only D) both oxygen and glucose
Membrane proteins that extend into the lipid bilayer are called
A. integral proteins. B. lipoproteins. C. peripheral proteins. D. glycoproteins. E. extrinsic proteins.