Viral proteins from which of the following are most likely to bind pRB, increasing the risk for cancer?
A. Epstein-Barr virus
B. Herpes simplex virus
C. Hepatitis B virus
D. Human papillomavirus
E. Rous sarcoma virus
Ans: D. Human papillomavirus
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Cilia and flagella of eukaryotic cells are composed of:
A. microtubules in a 9 + 2 arrangement. B. protein fibers in a helical arrangement. C. actin filaments in a 9 + 2 arrangement. D. nine triplets of microtubules in a circle.
All of the following are common polyploidy crops EXCEPT:
a. broccoli b. coffee c. cotton d. potatoes e. wheat
In arid terrestrial environments, salt can accumulate in the soil because of
A. the activities of grazing animals. B. the selective uptake of water by plants. C. the settlement and evaporation of water. D. the secretion of salt by plants. E. the precipitation of salt from dry air.
Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle
Indicate whether the statement is true or false