The myocardium is the
A. sac surrounding the heart.
B. layer of endothelial cells lining the wall of the heart.
C. artery that carries blood away from the heart.
D. artery that carries blood to the heart.
E. thick, muscular layer of the wall of the heart.
E. thick, muscular layer of the wall of the heart.
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Microevolution is ____
a. the appearance of a life form adapted to a new adaptive zone b. the formation of a new species c. the occurrence of a new mutation d. a change in allele frequencies within a population e. the gradual change in the form of fossils over geological time
Acetylation is irreversible
Indicate whether the statement is true or false.
Viral DNA inserted into a chromosome of the host is a
A. phage. B. reservoir. C. progenote. D. carrier. E. prophage.
A diploid cell has ______ the number of chomosomes as a haploid cell.
a) four times b) one-half c) twice d) one-fourth