Nonspecific chemical defenses of the human host include all of the following EXCEPT ______.

A. lactic acid
B. lysozyme
C. antibodies
D. hydrochloric acid


C. antibodies

Biology & Microbiology

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The earliest recorded direct studies of marine biology are attributed to:

a. the Greeks. b. the Catholic Church. c. Arabian philosophers. d. Micronesian mariners. e. the Chinese.

Biology & Microbiology

In nerve impulse transmissions, the neuron sending the message across the synapse is called the

A. postsynaptic cell. B. Schwann cell. C. presynaptic cell. D. motor cell. E. receptor neuron.

Biology & Microbiology

The Eustachian tube carries air from the middle ear to the

a. larynx. b. inner ear. c. pharynx. d. oval window. e. round window.

Biology & Microbiology

ATP is composed of deoxyribose, adenine, and 3 phosphate groups.

Answer the following statement true (T) or false (F)

Biology & Microbiology