CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
Detailed explanation-1: -Different cells in a multicellular organism may express very different sets of genes, even though they contain the same DNA. The set of genes expressed in a cell determines the set of proteins and functional RNAs it contains, giving it its unique properties.
Detailed explanation-2: -The muscle cell and nerve cell inherit different DNA sequences. Transcription of different genes leads to the synthesis of different proteins in the two cell types. The chromosomal DNA is rearranged and mutated so that the cell can become a muscle cell instead of a nerve cell.
Detailed explanation-3: -In the end, we all are made up of trillions of cells with nearly identical genes*. Since we start out as one cell, all our cells have the same DNA. And yet, all cells are obviously not the same. It is easy to see that the cells in our heart, for instance, work very differently from the cells in our eyes.
Detailed explanation-4: -Human nerve cells differ from human muscle cells because different sets of genes are expressed; in each type of cell, different genes are transcribed into mRNA and translated into protein.