A man comes to his physician complaining of drowsiness and a desire to sleep. He is suffering from tremors. He has just returned from central Africa. His physician believes that he may be suffering from a disease caused by Trypanosoma brucei, variety gambiense. If so, he has been bitten by a:
a. tsetse fly
b. "kissing bug"
c. mosquito
d. tick
a. tsetse fly
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What is the correct term for proteins embedded in the plasma membrane that form a gap junction?
a. claudins b. cadherins c. occludins d. connexins
While touring a farm, the farmer tells you that she uses cytokinin to increase crop productivity. But, from biology class you know that cytokinin alone has no effect on parenchyma cells. What other substance is the farmer most likely using in conjunction with cytokinin?
A. Suberin B. Ethylene C. Abscisic acid D. Strigolactones E. Auxin
The parent material layer of a soil is composed of weathered
A. humus. B. organic detritus and roots. C. residual aluminum and iron. D. soil. E. rock fragments.
Trace the route of most mineral ions from entering a plant to being used for the plant's metabolic reactions.
What will be an ideal response?