The accumulation of dead keratinocytes and the protein ____ on the skin surface forms a waterproof barrier

a. collagen
b. elastin
c. keratin
d. albumin
e. myosin


ANSWER: c

Biology & Microbiology

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In a human fetus that has the XX combination of sex chromosomes, the gonads develop into ovaries

a. True b. False

Biology & Microbiology

An increase in air temperature will result in ____ water vapor in the atmosphere because warm air

holds _____ water vapor than cold air does.

a. more; less b. more; more c. less; less d. less; more e. no change in; less

Biology & Microbiology

The human has __________ sets of autosomal chromosomes. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

The area on the retina that has the greatest density of cone cells is called the ____

a. fovea b. visual ganglion c. lateral geniculate nucleus d. visual cortex e. blind spot

Biology & Microbiology