In which one of the following cellular processes is RNA involved?
A. transcription
B. translation
C. DNA replication
D. transcription and translation
E. All of these choices are correct.
Answer E
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When macrophages bind to an antigen they
secrete cytokines. Cytokines act as
a. antibodies. b. phagocytes. c. signaling molecules. d. enzymes. e. antigens
Which of the following is not a common component of circulating blood?
a) blood plasma b) formed elements c) proerythrocytes d) platelets e) leukocytes
Certain complement proteins kill foreign microbes by
A. inactivating their ribosomes. B. destroying their nucleic acids. C. creating interferon. D. causing them to burst. E. agglutinating them.
Any substance that can cause an immune response is a/an:
A) microbe. B) nonspecific defense. C) antigen. D) interferon. E) antibody.