An antibacterial enzyme that is present in saliva, tears, and sweat is

A. lysozyme.
B. antibodies.
C. antigen.
D. interferon.


Answer: A

Anatomy & Physiology

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Metastasis is

A. the abnormal development of a tissue. B. an obvious loss of cellular or structural differentiation in the orientation of cells to each other. C. the movement or spread of malignant cells. D. a generalized increase in the size of a part of an organ. E. an increase in the normal number of cells within a tissue or organ.

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The optic nerve passes through which structure?

A) superior orbital fissure B) inferior orbital fissure C) optic canal D) internal optic meatus E) external acoustic meatus

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Define ceftiofur

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List 4 famous zoos located within the US

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