If scientists studying cancer could understand how to promote cell division in cells that do not ordinarily divide, this might help people who had injuries involving
A) muscle or nerve cells.
B) intestinal cells.
C) bone cells.
D) skin cells.
Answer: A
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. Stratification refers to the extended exposure to ________________ that is required for some seeds to germinate.
A. long wavelengths of light B. low temperatures C. high relative humidity D. short daylengths E. clay soil particles
Alzheimer's disease and Parkinson's disease are both neurological diseases that result from ____
a. lack of acetylcholine production b. abnormal levels of specific neurotransmitters c. failure to remove neurotransmitters from the synaptic cleft d. too much dopamine production e. a failed reuptake of specific neurotransmitters
A behavior that has a genetic basis is subject to
evolution by __________. Fill in the blank(s) with the appropriate word(s).
Name the mammalian structure that is positioned in the pathway of air just before the alveoli
a. larynx b. glottis c. bronchioles d. trachea e. pharynx