Match List-I with List-II $\begin{array}{|l|l|l|l|} \hline & \text{List-I} & & \text{List-II} \\ \hline…
Match List-I with List-II
$\begin{array}{|l|l|l|l|}
\hline
& \text{List-I}
&
& \text{List-II}
\\
\hline
\text{A.}
& \text{Cells are metabolically active and proliferate}
& \text{I.}
& G_{2} \text{ phase}
\\
\hline
\text{B.}
& \text{DNA replication takes place}
& \text{II.}
& G_{1} \text{ phase}
\\
\hline
\text{C.}
& \text{Proteins are synthesised}
& \text{III.}
& G_{0} \text{ phase}
\\
\hline
\text{D.}
& \text{Quiescent stage with metabolically active cells}
& \text{IV.}
& \text{S phase}
\\
\hline
\end{array}$
Choose the correct answer from the options given below:
A-IV, B-II, C-III, D-I
A-I, B-III, C-IV, D-II
A-I, B-I, C-III, D-IV
A-II, B-IV, C-I, D-III
Solution
(1) During $\mathrm{G}_1$ phase the cell is metabolically active and continuously grows but does not replicate its DNA.
(2) S or synthesis phase marks the period during which DNA synthesis or replication takes place.
(3) During the $\mathrm{G}_2$ phase, proteins are synthesized in preparation for mitosis while cell growth continues.
(4) Cells that do not divide further exit $\mathrm{G}_1$ phase to enter an inactive stage called quiescent stage $\left(\mathrm{G}_0\right)$ of the cell cycle. Cells in this stage remain metabolically active but no longer proliferate unless called on to do so.