HeLa cells have been used in research to
a. identify cell structures.
b. study sickle cell anemia.
c. study the effects of hyperoxia on cells.
d. study the mechanisms of cancer.
e. study various lung diseases.
ANSWER: d
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The hormone oxytocin stimulates ____
a. meiosis of oogonia b. ovulation c. implantation of the embryo d. development of the fetal heart e. contraction of uterine muscles during childbirth
Replacing an adenine nucleotide with a guanine is an example of a
A) translocation. B) transition. C) transversion. D) forward mutation. E) reversion or reverse mutation
Important characteristics of antimicrobial drugs include
A. low toxicity for human tissues. B. stability and solubility in body tissues and fluids. C. high toxicity against microbial cells. D. a lack of serious side effects in humans. E. All of the choices are correct.
_______ is/are the raw material of evolutionary change
Fill in the blank(s) with the appropriate word(s).