T cells
a. bind with free extracellular antigen
b. bind with MHC molecules only when they are in association with a foreign antigen
c. are responsible for cell-mediated immunity
d. have characteristics a and c
e. have characteristics b and c
E
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The __________ does not belong to the femur.
A. anterior border B. fovea capitis C. medial condyle D. greater trochanter E. lesser trochanter
Why is sodium actively reabsorbed in the nephron?
A) to make urine less concentrated B) to increase passive reabsorption of water C) to decrease blood pressure D) to decrease osmolarity inside the nephron
Most joints of the upper and lower limbs are ____
a. amphiarthroses b. sutures c. diarthroses d. synarthroses
In glycolysis,
A. NAD+ is reduced to form NADH. B. more energy is used than produced. C. glucose is formed as an end product. D. glyceraldehyde-3-phosphate is used as an enzyme. E. oxygen must be present for it to start.