Which of the follow could occur if a cell cycle checkpoint was missed?
A) The cell cycle would be arrested until the error could be corrected.
B) An unreplicated chromosome could be put through mitosis.
C) Cohesin could not function correctly.
D) DNA would mutate during G2.
E) The spindle apparatus would not form.
Answer: B
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Which of the following statements about insect hormones is false?
A. High levels of circulating juvenile hormone inhibit molting. B. Ecdysone is released from the prothoracic gland and stimulates molting. C. PTTH stimulates the release of ecdysone to trigger molting and metamorphosis. D. In the absence of juvenile hormone, an insect will metamorphose into the adult form. E. None of the answer options is false.
The two divisions of the peripheral nervous system are the ______ system, which controls skeletal muscle, and the ______ system, which regulates the smooth muscle of organs and glands.
a. somatic; autonomic b. sympathetic; parasympathetic
Name three human cancers with a genetic predisposition. What appears to be the genetic cause of each?
What will be an ideal response?
Which of the following subatomic particles has appreciable mass, but no charge?
a. proton b. both proton and neutron c. Electron d. neutron