The chemical mediators of anaphylaxis are
A) found in basophils and mast cells.
B) antibodies.
C) antigens.
D) antigen-antibody complexes.
E) the proteins of the complement system.
A
Biology & Microbiology
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The different strains of a bacterial species
A. may be susceptible to different antibiotics. B. reproduce asexually. C. may be the result of random mutations. D. can participate in conjugation and transformation. E. all of these are correct.
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Which of the following organisms is
responsible for the production of cheese, yogurt, and sour cream?
a. Lactobacillus b. Saccrharomyces c. Clostridium d. E. coli e. more than one of these
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About how many million years ago did humans of the genus Homo first inhabit eastern Africa?
a. 2 b. 4 c. 6 d. 8 e. 10
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What is the function of secretion?
What will be an ideal response?
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