Normal cells become cancer cells when
A.) regulation of cell growth and division occurs
B.) cells respond to control mechanisms
C.) cells pass through G1
D.) cells do not respond to checkpoints
Answer: D.) cells do not respond to checkpoints
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After years of listening to loud music on headphones, the cilia on Bob's hair cells are damaged. What is the result?
Hair cells are delicate sensors of sound, movement, and gravity. Since they are stimulated by movement of the stereocilia and kinocilium, these structures are vulnerable to damage when stimulus is too strong or sustained. A. vestibular problems B. hearing loss C. vision problems D. taste hallucinations
Small cells function more effectively, because as cells become larger their surface area to volume ratio:
A. stays the same. B. is cubed. C. decreases. D. increases. E. is squared.
Ethylene stimulates the ripening of fruits. Indicate whether the statement is true or false
Which of the following is NOT true of the corpus luteum? The corpus luteum
A. develops from a follicle. B. produces hormones. C. is present during the entire menstrual cycle. D. prevents the release of eggs.