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Biology 172 - Exam 4 Practice questions 100- SURE ANSWERS) 2024 - DISTINCTION GUARANTEED_
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8/10/24, 7:04 AMBiology 172 - Exam 4 Practice questions
Jeremiah
Terms in this set (14)
The protein RB is a tumor suppressor. What a mutation which prevents RB from binding to the transcription factors DP and E2F
type of mutation in RB will promote tumor
growth?
To promote cancer, proto-oncogenes must on; off
be turned ______and tumor suppressors must
be turned ___ _.
Telomerase is .... a proto-oncogene; it is more active in cancer cells than in normal cells
Which of the following does NOT promote A mutant cyclin that cannot bind its normal CDK binding partner
uncontrolled cell growth (i.e. cancer)?
Why is it unlikely that a single mutation Cells have numerous checkpoints that prevent cancerous cells from entering or
would lead to a tumor? completing the cell cycle.
Apoptosis would most likely be initiated by a tumor suppressor gene.
Many growth factors signal through the Protein over-expression
receptor-tyrosine kinases. What type of
mutation in a receptor tyrosine kinase will
promote tumor growth?
Why is it rare for a point mutation to convert It is unusual for one amino acid change to cause a protein to be more active.
a proto-oncogene into an oncogene?
blocking the action of an oncogene,
instructing defective cells to die,
Tumor suppressors oppose oncogenes by:
repairing mutations,
and slowing cell division.
Which of the following is NOT a function Inhibiting apoptosis
performed by tumor suppressor genes?
A. Slowing cell division
B. Repairing mutations
C. Inhibiting apoptosis
D. Promoting apoptosis
E. Enforcing a cell cycle checkpoint
Biology 172 - Exam 4 Practice questions
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