Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage. Which of these occurs just before the cell enters the G2 stage of the cell cycle?

DNA replicates
DNA replicates

The cell divides
The cell divides

Vacuoles form
Vacuoles form

The nuclear membrane disintegrates

check for the pregnancy rating of drug. if its class c or d see if other alternatives

maybe because its impossible for balloons to lift a whole entire house.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.