Which of the following is not considered to be part of an adaptive immune response?

a. phagocytic cells e. antigen receptors
b. antigen-presenting cells f. complement activation
c. histamines g. antibodies
d. cytokines h. none of these


H

Biology & Microbiology

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Charles Darwin's observations while aboard the HMS Beagle led eventually to the:

a. idea that life started on land. b. theory that life's origin was in fresh water. c. theory for the process that causes evolution. d. re-birth of marine biology. e. idea that life could not survive in the deep sea.

Biology & Microbiology

Seed plants

a. have alternation of generations. b. are heterosporous. c. develop a seed coat. d. are all of the above.

Biology & Microbiology

The sense of euphoria from low doses of barbiturates is chiefly due to __________.

A. an inhibition of the respiratory centers in the medulla B. a disinhibition of the cerebral cortex C. an inhibition of the reticular formation D. an excitation of the limbic system

Biology & Microbiology

Which of the following methods would be the most suitable to assess whether your protein exists as a monomer or in a complex?

(a) gel-filtration chromatography (b) gel electrophoresis (c) western blot analysis (d) ion-exchange chromatography

Biology & Microbiology