INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following statements about the cells of multicellular organisms is false?
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The same genes are expressed in each cell
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Different genes are expressed in different types of cells
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almost all of the cells have the exact same DNA
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All of these are true
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Explanation:
Detailed explanation-1: -Cells would have to be enormous if every protein were expressed in every cell all the time. The control of gene expression is extremely complex. Malfunctions in this process are detrimental to the cell and can lead to the development of many diseases, including cancer.
Detailed explanation-2: -Only a fraction of the genes in a cell are expressed at any one time. The variety of gene expression profiles characteristic of different cell types arise because these cells have distinct sets of transcription regulators.
There is 1 question to complete.