CELL DIVISION
THE CELL CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
old and needs to be dissolved.
|
|
|
completely unwound and ready for replication.
|
|
|
tightly bound into chromosome-like structures.
|
|
|
relaxed like a bowl of spaghetti.
|
Detailed explanation-1: -In electron micrographs, eukaryotic interphase chromatin appears much like a plate of spaghetti-in other words, there is no obvious pattern of organization.
Detailed explanation-2: -In the nucleus of a cell, DNA comprises a code carrying all the instructions that the cell needs to live. In the nuclei of eukaryotic cells, the DNA molecules, coiled like microscopic spaghetti, form compact, bulky structures called chromosomes.
Detailed explanation-3: -The relaxed form of DNA that can be found in the nucleus is referred to as chromatin. This form of DNA is observed when the cell is not dividing.
Detailed explanation-4: -Chromatin refers to a mixture of DNA and proteins that form the chromosomes found in the cells of humans and other higher organisms. Many of the proteins-namely, histones-package the massive amount of DNA in a genome into a highly compact form that can fit in the cell nucleus.