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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Liver cells and skin cells receive different amounts of DNA. The additional DNA allows skin cells to develop pigment.
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Liver cells and skin cells receive different DNA. The DNA determines the structure and function of each cell.
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Liver cells and skin cells receive the same DNA. However, different sets of genes are activated in each cell.
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Liver cells and skin cells receive the same DNA. However, liver cells receive more DNA over time.
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Detailed explanation-1: -Signals from the environment-chemicals, extracellular proteins/hormones/factors, neighboring cells, the physical environment-converge on the cell, typically activating a signaling cascade that leads to gene expression. These specific proteins change the phenotype into that of a more specialized cell.
Detailed explanation-2: -Stem cells are different from other cells in the body in three ways: They can divide and renew themselves over a long time. They are unspecialized, so they cannot do specific functions in the body. They have the potential to become specialized cells, such as muscle cells, blood cells, and brain cells.
Detailed explanation-3: -The cell types in a multicellular organism become different from one another because they synthesize and accumulate different sets of RNA and protein molecules. They generally do this without altering the sequence of their DNA.