What are small projections of the mucosal wall composed of brush border cells?

a. microvilli
b. mucins
c. villi
d. submucosa
e. jejunum


c

Biology & Microbiology

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Atoms of a single element that possess different numbers of neutrons are called:

A. isomers. B. polymers. C. ions. D. isotopes. E. monomers.

Biology & Microbiology

In ____ bonds, atoms share electrons equally

a. double b. ionic c. polar covalent d. nonpolar covalent e. hydrogen

Biology & Microbiology

Which characteristic is associated with hardwood species?

a. thick cuticles b. susceptibility to periodic fires c. needle-shaped leaves d. recessed stomata e. adaptations for conserving water

Biology & Microbiology

Chromosomes X and Y are called the sex chromosomes because they determine the sex of an individual; all the others are called _________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology