Which of the following is true of benign tumors?
a. The cells do not resemble the cells of the parent tissue.
b. The cells of the tumor are often irregular, with nuclei of various sizes and shapes.
c. The cells grow more rapidly than the cells surrounding it.
d. They often metastasize.
e. They are not cancer.
Answer: e. They are not cancer.
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Which of the following is an example of a peptide hormone?
A. insulin B. adrenaline C. cortisol D. testosterone E. progesterone
Which of the following molecules would you predict moves through a lipid bilayer most rapidly?
A. C6H12O6 B. CH3OH C. C2H5OH D. C4H10 E. NH2SO2CH3
Subatomic particles that have a negative charge and orbit around the nucleus _______________
Fill in the blank(s) with the appropriate word(s)
Selective breeding, DNA testing, and genetically modifying crop plants are all applications of
A.) DNA replication. B.) genetic mutations. C.) biotechnology. D.) environment-genotype interactions.