The MDR ABC transporter functions in a number of animal cells to transport

a. glucose into cells.
b. ions into cells.
c. poisons and drugs out of cells.
d. amino acids across epithelia.


Ans: c. poisons and drugs out of cells.

Biology & Microbiology

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Due to a chemical equilibrium, a syntrophic relationship can be disrupted if the product from the first partner's metabolism is removed too quickly

Indicate whether the statement is true or false.

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Muscle fibers generate maximum force:

A. at intermediate lengths. B. when pulled to long lengths before contraction. C. when contracting at short lengths. D. when the myosin filaments contact the Z discs. E. when the overlap between actin and myosin is minimal.

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Extra fluid that leaks out of the capillary bed

enters

a. the surrounding cells. b. the lymphatic system. c. the venules. d. the capillary again. e. the adjoining arterioles

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During DNA replication, DNA pol III synthesizes the lagging strand in segments, called

A. replication fragments. B. repeating primers. C. Okazaki fragments. D. Chargaff's segments. E. replisomes.

Biology & Microbiology