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