Chapter 10: Q. 5 (page 276)
The first level of DNA organization in a eukaryotic cell is maintained by which molecule?
a. cohesin
b. condensin
c. chromatin
d. histone
Short Answer
The correct option is D.
Chapter 10: Q. 5 (page 276)
The first level of DNA organization in a eukaryotic cell is maintained by which molecule?
a. cohesin
b. condensin
c. chromatin
d. histone
The correct option is D.
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Get started for freeWhich molecule is a Cdk inhibitor that is controlled by p53?
a. cyclin
b. anti-kinase
c. Rb
d. p21
Rb is a negative regulator that blocks the cell cycle at the G1 checkpoint until the cell achieves a requisite size. What molecular mechanism does Rb employ to halt the cell cycle?
Identical copies of chromatin held together by cohesin at the centromere are called _____.
a. histones.
b. nucleosomes.
c. chromatin.
d. sister chromatids.
A gene that codes for a positive cell-cycle regulator is called a(n) _____.
a. kinase inhibitor.
b. tumor suppressor gene.
c. proto-oncogene.
d. oncogene.
If the M checkpoint is not cleared, what stage of mitosis will be blocked?
a. prophase
b. prometaphase
c. metaphase
d. anaphase
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