NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which pair is correct?
A
G1 phase:DNA replication
B
G2:preparation for mitosis
C
S phase:cell division
D
Mitosis:cell growth
Explanation: 

Detailed explanation-1: -M-phase governs the nuclear division (Karyokinesis), and cytoplasm division ( cytokinesis). S-phase is known to double the amount of genetic content within the cell. Therefore, a pair that is correct with respect to the cell cycle is the G2 phase, preparation for mitosis.

Detailed explanation-2: -So, what happens in G2 of the cell cycle? The second growth phase starts to prepare the cells with newly replicated DNA for entry into the mitosis phase by putting in place the necessary organelles for mitosis.

Detailed explanation-3: -G2 phase (Gap 2)-The Cell “double checks” the duplicated chromosomes for error, making any needed repair.

Detailed explanation-4: -Hence the correct sequence of phases of cell cycle is: G1 → S → G2 → M. Q.

Detailed explanation-5: -There are two stages in the cell cycle marked by the replication of organelles and protein synthesis: G1 and G2. G1 follows mitosis and allows the cell to grow. G2 occurs just before mitosis, and ensures that both daughter cells will have adequate organelles.

There is 1 question to complete.