The centriole undergoes duplication during:

Which of the following statements are correct for $G_{1}$-phase?
$I.$ It is the last substage of interphase
$II.$ Cell organelles do not increase in number
$III.$ Cell grows in size and content both
$IV.$ It synthesizes $RNAs$,proteins and other biochemicals for cell growth and subsequent replication of $DNA$
Choose the correct option

Normal cellular activities,such as protein synthesis,occur primarily during which phase of the cell cycle?

What is called the quiescent stage? Give information.

Which phase is the last phase of interphase?

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?