p21 inhibits cell cycle progression by binding to and inhibiting
a. cyclin-dependent kinases.
b. p53.
c. ATM.
d. Rb protein.
Ans: a. cyclin-dependent kinases.
You might also like to view...
In which disciplines are the properties of fluids likely to be studied?
What will be an ideal response?
There are nine peripheral pairs and one central pair of ________ found inside eukaryotic flagella and cilia.
A. filaments B. endoflagella C. cilia D. active proteins E. microtubules
Referring to the illustration, how can there be two non-recombinant chromosomes and two recombinant chromosomes?
a. Recombination doubles the amount of chromosomes.
b. Crossing over results in mutations that create more genetic material.
c. Chromosomes during this stage are replicated with two matching sister chromatids.
d. These are chromosomes before fertilization so they are haploid.
Farmers often practice crop rotation to help enrich agricultural fields. Why are beans and other legumes often used in the rotations?
A. Less carbon dioxide. B. Bacteria in legume root nodules are nitrifiers. C. Legumes remove toxins from the soil. D. Legumes enrich the soil by forming heterocysts. E. Beans fix nitrogen.