Specialized cells found at the base of the epidermis that produce pigments that help give skin its color are called ________

A) melanin B) basal C) lacunae D) melanocytes


Answer: D

Biology & Microbiology

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Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers should use a molecule that is _____

A) hydrophobic B) polar C) charged D) acidic

Biology & Microbiology

On its own, the product of the C group gene alone in Arabidopsis thaliana triggers

a. sepal development. b. stamen development. c. carpel development. d. petal development. e. stamen and carpel development.

Biology & Microbiology

A houseplant placed in a window grows toward the

source of light because auxin a. becomes more concentrated on the illuminated side of the plant. b. becomes more concentrated in the roots of the plant. c. becomes more concentrated on the nonilluminated side of the plant. d. inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster. e. does none of these.

Biology & Microbiology

Simplexviruses can establish latent infections of ________ cells. 

A. B  B. epithelial  C. nerve D. T  E. muscle

Biology & Microbiology