First slide

Cell Cycle

Question

During cell growth, DNA synthesis takes place on

Easy

A

S-phase
B

$G_{1}$ -phase
C

$G_{2}$ -phase
D

M phase

Solution

During cell cycle S-phase (synthesis – phase) is characterised by DNA replication and centriole duplication. $G_{1}$ – Phase = RNA, protein and ATP synthesis.
$G_{2}$ = Phase = Tubulin synthesis, Mitochondria & Plastid duplication.
M-Phase = actual cell division phase.

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