Cells undergo division when which of the following conditions have been met?
A) They are still growing and have ample nutrients
B) They are stimulated by growth factors and neighboring cells are squeezed tightly against them
C) They have grown large enough and replicated their DNA
D) They have grown large enough and neighboring cells are squeezed tightly against them
C
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The innermost layer of the muscularis is smooth muscle that ________.
A. lies in the direction of the canal B. encircles the canal C. surrounds only the stomach D. keeps the outer surface of the intestines moist
Animal refuges provide areas for hunting and fishing
Indicate whether the statement is true or false
The hydrophobic interior of the lipid bilayer of the plasma membrane blocks the passage of water-soluble substances
Indicate whether the statement is true or false
African-American men are more likely to develop prostate cancer and die from it than Caucasian or Asian men.
a. true b. false