________ are cytotoxins produced by Tc cells that cause apoptosis

A) Perforins
B) Granzymes
C) Phagocytes
D) Macrophages


Answer: B

Biology & Microbiology

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Maintaining a steady-state internal environment, despite a changing external environment, is called ________.

A. heterostasis B. homeostasis C. biofeedback D. bioregulation

Biology & Microbiology

The skin would be an example of

a. a first line of defense. b. a second line of defense. c. a third line of defense. d. all of these. e. none of these.

Biology & Microbiology

____ glands release products onto an internal or external surface

a. Endocrine b. Muscular c. Neural

d. Exocrine e. Connective

Biology & Microbiology

Which of the following contains deoxyribose?

A) Ribosomal RNA B) DNA C) Messenger RNA D) Transfer RNA E) RNA polymerase

Biology & Microbiology