NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells spend 90% of their life in:
A
G1
B
S phase
C
Interphase
D
Mitosis
E
G2
Explanation: 

Detailed explanation-1: -During interphase, the cell undergoes normal growth processes while also preparing for cell division. It is the longest phase of the cell cycle, cell spends approximately 90% of its time in this phase. In order for a cell to move from interphase into the mitotic phase, many internal and external conditions must be met.

Detailed explanation-2: -A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.

Detailed explanation-3: -The phase that makes up about 90% of the cell cycle is interphase. Although our cells must divide to replace themselves and facilitate growth and repair in the body, most of a cell’s life is not spent dividing. This time is called interphase. Interphase consists of three phases, G1, S and G2.

Detailed explanation-4: -Cells spend 95% of their cell division cycle in interphase (G1-, S-, and G2-phases) with average durations of 4 hr, 9 hr, and 5 hr to complete G1-, S-, and G2-phases, respectively. This results in cells spending only 5% of their cell-cycle time (less than 1 hr) in mitosis (Figures 1B–1D).

Detailed explanation-5: -In fact, interphase takes up about 90% of a cell’s life. That leaves just 10% for mitosis! Cell before mitosis showing the location of the centrioles, microtubules, nuclear membrane, nucleolus, and DNA (Let’s Talk Science using an image by Aldona via iStockphoto). Interphase has three stages: G1, S and G2.

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