NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a cell undergoes specialization or differentiation,
A
it’s DNA changes.
B
it becomes more specialized depending on which part of the DNA gets activated.
C
it divides instantly, forming new cells
D
its DNA gets copied for cell division.
Explanation: 

Detailed explanation-1: -In order for a cell to differentiate into its specialized form and function, it need only manipulate those genes (and thus those proteins) that will be expressed, and not those that will remain silent. The primary mechanism by which genes are turned “on” or “off” is through transcription factors.

Detailed explanation-2: -Cell differentiation is known as a process in which cells become specialized. Pluripotency means the potential to become any cell type and is a potential observed in stem or progenitor cells at the beginning of the differentiation process.

Detailed explanation-3: -Stem cells are cells that have the ability to become any type of specialized cell in the body. After an egg cell and sperm cell unite to begin forming a new organism, all of the DNA in each cell of that organism will be virtually identical.

Detailed explanation-4: -Cells undergo a process called differential gene expression. This process allows cells to become specialized, as their structure determines their function. The process begins when a stimulus acts on an unspecialized cell (a cell that has the potential to become any cell in the body-multipotent stem cells).

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