What would be likely to happen if a large excess amount of activated cyclin-dependent kinases were injected into cells during the G1 phase?
a) Progression to S phase would proceed at a slightly slower rate than usual.
b) Progression to S phase would proceed earlier and more rapidly than usual.
c) Progression to S phase would be blocked.
d) Most of the E2F transcription factors would remain complexed with pRB.
Ans: b) Progression to S phase would proceed earlier and more rapidly than usual.
You might also like to view...
Chris is studying the chemical properties of different amino acids. Thus, he is paying
particular attention to __________.
a. hydrocarbon chains b. the R group c. triglycerides d. enzymes
The electrons at the lowest energy level in the neon atom depicted in the figure above are found in
which orbital?
a. 1s b. 2s c. 2px d. 2py e. 2pz
Microscope rulers measure microorganisms in micrometers (?m). How many micrometers fit in a meter?
A. 100 B. 1,000,000 C. 100,000 D. 1,000 E. 10
Jan Baptista van Helmont did an important experiment related to photosynthesis. He weighed a small willow tree and a pot of soil. Jan then planted the tree in the pot. Over the course of five years, he added only water to the pot. At the end of five years, he weighed the tree and found that it had gained 74.4 kg. He weighed the soil, and it was only 57 g less. What do the results of this specific experiment demonstrate about what is needed for a plant to grow and increase its mass?
A. Plants must be able to increase their mass using substances in addition to what is found in soil B. Plants do not need soil to grow C. All of the food a plant needs to grow comes from the water D. All of the food a plant needs to grow comes from the soil E. Plants need oxygen to grow