If the nucleus represents a large size in proportion to the cytoplasm of a cell,it indicates that:

During which phase of interphase do biosynthetic processes occur?

Which phase of interphase is the most important point in regulation of the cell cycle,during which it must decide whether the cell will start a new cycle or will enter in $G_0$ phase?

The rate of cleavage is inversely proportional to the duration of

During the $G_2$-phase of the cell cycle,the amount of $DNA$ in the chromosomes is .......

Select the correct statements regarding $S$-phase of interphase:
$I.$ Occurs between $G_{1}$ and $G_{2}$ phases.
$II.$ $DNA$ replication begins in the nucleus.
$III.$ Centrioles duplicate in the cytoplasm.
$IV.$ As $DNA$ is doubled,the number of chromosomes also doubles.
The option with correct statements is: