Which of the following defends against BOTH bacteria and viruses?

a. interferons
b. lysozyme
c. NK cells
d. plasma cells
e. cytotoxic T cells


D

Biology & Microbiology

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Which of the following brain regions helps regulate hunger and thirst?

A. cerebrum B. cerebellum C. thalamus D. hypothalamus E. medulla oblongata

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Which glands secrete an oily product that softens the skin and hair?

A) ceruminous glands B) sebaceous glands C) apocrine sweat glands D) eccrine sweat glands

Biology & Microbiology

Match the molluscan body part to its function.

1. mantle cavity 2. visceral mass 3. mantle 4. foot a. movement b. houses organs c. secretes the shell d. houses gills

Biology & Microbiology

Pure-breeding yellow guinea pigs crossed with purebreeding

white ones produce only cream-colored offspring. This pattern indicates incomplete dominance. Rough hair is found to be dominant to smooth hair. Give the F1 and F2 genotypic and phenotypic ratios of a cross of a smooth, white guinea pig with a homozygous, rough, yellow guinea pig. What will be an ideal response?

Biology & Microbiology