What is the main molecular difference between cells in a G0 state and cells that have simply paused in G1?
S Phase
What will be an ideal response?
In G0, the cell-cycle control system is partly dismantled, so that some of the Cdks and cyclins are not present. Cells paused in G1, by contrast, still contain all the components of the cell-cycle control system. Whereas the latter cells can rapidly progress through the cycle when conditions are right, G0 cells need to synthesize the missing cell-cycle control proteins so as to re-enter the cycle, which usually takes 8 hours or more.
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The nutrient enrichment of an aquatic ecosystem is called ____
a. phosphorylation b. denitrification c. nitrification d. eutrophication e. ammonification
Science can best be described as
A) a search for the ultimate truth. B) a search for evidence that proves our concepts wrong. C) proving facts. D) a complete lack of dissent amongst ideas to obtain the truth.
All of the red squirrels living on a college campus would be a(n)
A) genus. B) family. C) population. D) ecosystem. E) community.
Equilibrium is sensed by ____.
A. chemoreceptors B. mechanoreceptors C. photoreceptors D. thermoreceptors E. nociceptors