Matter is composed of:
A. molecules
B. mass
C. energy
D. atoms
D. atoms
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Natural killer cells destroy target cells by:
a. releasing antibiotics, which break down the cell membranes. b. releasing cytokines, perforins, and granzymes. c. releasing histamine, which signals other blood cells to aggregate. d. phagocytosis, after the cells are targeted by antibodies. e. releasing lysosomal enzymes, which digest the target cells.
Peracetic acid is a liquid chemical sporicide that is a type of
a) peroxygen. b) biguanide. c) aldehyde. d) halogen.
Glycogen belongs in the class of molecules known as:
A) amino acids. B) monosaccharides. C) polysaccharides. D) nucleic acids. E) proteins.
Which of the following terms describes bacteriophage DNA that has become integrated into the host cell chromosome?
A) intemperate bacteriophages B) transposons C) prophages D) T-even phages E) plasmids