The equilibrium potential of potassium is
A) -90mV.
B) -65mV.
C) -70mV.
D) +30mV.
E) +66mV.
A
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The esophagus differs from the rest of the alimentary tract in that it possesses only a loose layer of tissue called the ________.
A. adventitia B. muscularis C. mucosa D. serosa
Glucose is a
A. polar molecule, and therefore it dissolves readily in plasma. B. polar molecule, and therefore it requires a transporter in the blood. C. nonpolar molecule, and therefore it dissolves readily in plasma. D. nonpolar molecule, and therefore it requires a transporter in the blood.
In spermatozoa, a structure called the acrosome:
a. Contains dynein arms that control sperm motility b. Contains proteolytic enzymes that function during fertilization of an ovum by sperm c. Is a focal accumulation of rough endoplasmic reticulum d. Localizes around mitochondria in the midpiece of the flagellum e. Regulates the condensation of nuclear DNA
true or false: the hamstrings are the major extensors of the knee.
What will be an ideal response?