Blood in arteries
a. always travels away from the heart.
b. travels away from the heart only if it is
oxygenated.
c. always travels toward the heart.
d. travels from the lungs.
e. is always oxygenated
A
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a. true b. false
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Replication of chromosomal DNA occurs _________.
A. to repair gene damage caused by mutation B. in the cytoplasm of a eukaryotic cell C. whenever a cell makes protein D. before a cell divides