NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In one type of cell division, a single cell forms two new cells. This process is called mitosis. ​What is the reason that human skin cells frequently undergo mitosis?
A
to get energy for the cell.
B
to prevent bruises on the body
C
to replace dead or damaged skin cells
D
to replace damaged nerve cells
Explanation: 

Detailed explanation-1: -Once the chromosomes are separated in space, cell division occurs to produce two daughter cells. Thus, mitosis uses chromosome replication to produce two identical diploid daughter cells, which are genetically identical to the diploid parent cell. This way all your cells have identical DNA composition.

Detailed explanation-2: -Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

Detailed explanation-3: -The single cell then pinches in the middle to form two separate daughter cells each containing a full set of chromosomes within a nucleus. This process is known as cytokinesis.

Detailed explanation-4: -The daughter cells from mitosis are called diploid cells. Diploid cells have two complete sets of chromosomes. Since the daughter cells have exact copies of their parent cell’s DNA, no genetic diversity is created through mitosis in normal healthy cells.

Detailed explanation-5: -Answer: Significance of mitosis: It helps in maintaining the same number of chromosomes in daughter cells after division. It is responsible for growth and development of multicellular organisms. It helps in repairing of damaged tissues.

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