PATHOLOGY

PATHOLOGY MCQ

CELL DAMAGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The material of chromosomes which is made up of proteins and DNA is called ____
A
Centromere
B
Chromatid
C
Karyotype
D
Chromatin
Explanation: 

Detailed explanation-1: -The complex of DNA and protein is called chromatin (from the Greek chroma, “color, ‘’ because of its staining properties). In addition to the proteins involved in packaging the DNA, chromosomes are also associated with many proteins required for the processes of gene expression, DNA replication, and DNA repair.

Detailed explanation-2: -Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.

Detailed explanation-3: -The DNA is packaged by special proteins called histones to form chromatin. The chromatin further condenses to form chromosomes. This means chromatin is a lower order of DNA organization, whereas chromosomes are a higher order of DNA organization.

Detailed explanation-4: -Chromatin 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.

Detailed explanation-5: -A complex made up of proteins and DNA (Deoxyribonucleic acid) that forms chromosomes is called chromatin. It contains histone and non histone proteins, DNA, and RNA (Ribonucleic acid) as well. RNA plays a crucial role in the structural organization of the chromosome.

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