Which one of the following enables T helper cells to stimulate and activate other cells of the immune response?
A) interferon
B) cytokines
C) antibodies
D) complement
E) histamine
B
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Four of the five answers listed below are
endocrine glands located in areas other than the chest and abdomen. Select the EXCEPTION.
a. hypothalamus gland b. thyroid gland c. pineal gland d. pancreas e. pituitary gland
Three college students purchased a bag of fresh-picked, unripened apples from a nearby orchard. Keeping the apples in a paper bag for several days, the apples ripened. This was a response to the plant hormone
A. auxin. B. ethylene. C. gibberellin. D. jasmonic acid. E. abscisic acid.
What are local controls that tend to keep blood flow constant called?
A) autonomics B) flow autoregulation C) osteogenic factors D) extrinsic factors E) flow telemetry
____ is a technique that can be used to separate DNA molecules on the basis of their size
a. Separation gradient b. Electrophoresis c. Selective sorting d. Cloning e. PCR