T cells recognize epitopes only in the context of
A. Complement
B. Interleukin-2
C. MHC proteins
D. B cells
E. Granzyme
Answer: C. MHC proteins
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Larval salamanders tend to consume their insect prey whole. Thus, they are __________
a. bulk feeders b. filter feeders c. fluid feeders d. omnivores
Before leaving on a trip, you give your favorite houseplant a little extra water and a pinch of plant food. Your trip ends up lasting a few days longer than you originally planned, and when you return, you discover that your plant has wilted dramatically. What happened?
a. The extra water caused its cells to swell, bursting its plasma membranes. b. Overwatering your plant deprived it of the electrolytes that plants crave. c. Your plant dried out before you returned, and it suffered from plasmolysis. d. The plant food inverted the concentration gradient in the plant, dehydrating it.
If Georgina takes a drug that increases the effects of norepinephrine, what changes would we see in the basic activities of her body?
What will be an ideal response?
When diarrhea contains more water than it does fecal material:
A) the body loses an equal amount of electrolytes and water. B) the concentration of electrolytes that are lost increases significantly. C) the body's key electrolytes are spared and are not passed in the diarrhea. D) smaller amounts of electrolytes are lost compared to the amount of lost water.