GENERAL HISTOLOGY

EPITHELIUM

CELL JUNCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Proteins with DNA that are found inside the nucleus are called
A
Centrioles
B
Chloroplast
C
Nucleolus
D
Chromatin
Explanation: 

Detailed explanation-1: -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-2: -In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Detailed explanation-3: -The primary protein components of chromatin are histones. An octamer of two sets of four histone cores (Histone H2A, Histone H2B, Histone H3, and Histone H4) bind to DNA and function as “anchors” around which the strands are wound.

Detailed explanation-4: -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-5: -Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus.

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