The most abundant phagocytes in our immune

system arsenal are the



a. macrophages.
b. neutrophils.
c. monocytes.
d. dendritic cells.
e. T lymphocytes


B

Biology & Microbiology

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Relative to enzymes in mesophilic microorganisms, which of the following is NOT characteristic of enzymes in psychrophiles?

A) decreased alpha helices B) decreased beta sheets C) less hydrogen bonds D) less ionic bonds

Biology & Microbiology

The methanobacteria, halobacteria, and sulfobacteria are included in which domain?

A) eubacteria B) protista C) blue-green algae D) archaea E) all of the above

Biology & Microbiology

Homozygotes for hemoglobin C have

A) sickle cell disease. B) a normal phenotype. C) a bluish complexion. D) a black mouth.

Biology & Microbiology

The ____________________ theory describes how interactions between actin and myosin produce skeletal muscle

contractions. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology