Question

Which of the following statements about differentiated cells is true? (a) Cells of distinct types express...

Which of the following statements about differentiated cells is true?

(a) Cells of distinct types express nonoverlapping sets of transcription factors.

(b) Once a cell has differentiated, it can no longer change its gene expression.

(c) Once a cell has differentiated, it will no longer need to transcribe RNA.

(d) Some of the proteins found in differentiated cells are found in all cells of a multicellular organism.

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Answer #1

A- all cells express some gene which is required for the basic function of the cells. So option A is wrong.

B- Dedifferentiation is a process in which differentiated cell changes its gene expression. So option B is wrong.

C- All cells need to transcribe RNA to carry out it's all the function. SO option C is also wrong.

D- Some proteins like enzyme of glycolysis, TCA cycle, and many other proteins are present in all the cells even if the cell is differentiated.

So option D is true rest all other options are wrong

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