The DNA molecule usually is made up of how many strands?
a. 1
b. 2
c. 3
d. 6
e. 12
B
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When atoms gain or lose electrons, they become negatively or positively charged. These negatively or positively charged atoms are known as
A. isotopes. B. ions. C. isomers. D. unstable atoms.
Of which materiais is cartilage composed?
A. glycoproteins and calcium phosphate B. glycoproteins and collagen fibers C. collagen fibers and osteocytes D. osteocytes and glycoproteins E. osteocytes and calcium phosphate
The cis face of the Golgi complex is most directly involved in which of the following?
a. packaging molecules in vesicles b. accepting vesicles from the ER c. synthesizing proteins d. transporting molecules out of the Golgi e. catalyzing the efficient folding of proteins
Which cell structure is important in adherence?
a. cell wall a. fimbria b. teichoic acid c. lipopolysaccharide