NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of cells have not begun to differentiate into specialized cells?
A
gametes
B
stem cells
C
somatic cells
D
neurons
Explanation: 

Detailed explanation-1: -Stem cells have the ability to recreate functional tissues. Pluripotent stem cells are undifferentiated; they do not have any tissue-specific characteristics (such as morphology or gene expression pattern) that allow them to perform specialized functions.

Detailed explanation-2: -Adult stem cells have limitations with their potency; unlike embryonic stem cells (ESCs), they are not able to differentiate into cells from all three germ layers.

Detailed explanation-3: -Embryonic cells do not begin to differentiate until gastrulation, the stage in which multiple different tissue layers form inside the embryo.

Detailed explanation-4: -Stem cells have the ability to differentiate into specific cell types. The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.

Detailed explanation-5: -Finally, we have the unipotent stem cells, which are the least potent and most limited type of stem cell. An example of this stem cell type are muscle stem cells. While muscle stem cells can self-renew and differentiate, they can only do so into a single cell type.

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