INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
In nerve cells all the genes are expressed.
|
|
|
In muscle cells all the genes are expressed.
|
|
|
In both kinds of cells the same genes are expressed.
|
|
|
In both kinds of cells different genes are expressed.
|
Detailed explanation-1: -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.
Detailed explanation-2: -Although all cells contain the same DNA sequence, muscle cells are different from nerve cells and other types of cells because of the different genes that are turned on in these cells and the different RNAs and proteins produced.
Detailed explanation-3: -Muscle cells are found specifically in muscles and possess the ability to shorten themselves due to the presence of motor proteins in them. Nerve cells are functional units of the nervous system. They are granular cells and help in the transmission of nerve impulses throughout the body.
Detailed explanation-4: -In fact, there is a common set of genes to which they can both bind, but differences between their DNA-binding regions allow each of the two proteins to also turn on their own unique sets of genes, which is what enables one to make muscle cells while the other makes neurons.