Question

In a nucleosome, the DNA is wrapped about
A. Polymerase molecules
B. Ribosomes
C. Histones
D. Nucleolus

Answer 1

Hint: A nucleosome is the fundamental rehashing unit of eukaryotic chromatin. In a human cell, around six feet of the DNA is bundled into a core by this protein. A solitary nucleosome comprises around 150 base sets of DNA arrangement.

Complete answer: A nucleosome is a fundamental unit of DNA bundling in eukaryotes, comprising a portion of a DNA twisted in a group of around eight histone protein octamer centres. Nucleosome establishes the rehashing unit of a structure in the core called chromatin, and it is string-like found in the core. The charged DNA is folded over the charged histone octamer to shape a structure called the DNA helix. Histones are made up of two subunits of each H2A, H2B, H3, and H4.
Histones are made up of charged amino acids corrosive buildups, for example, lysine and arginine. The positive charges permit them to instantly connect with the adversely charged DNA through electrostatic communications.
a) A polymerase is a catalyst that integrates long chains of polymers or nucleic acids. DNA polymerase and RNA polymerase are enzymes involved in the process of transcription and replication. It functions in a 5’ to 3’ direction.
b) A ribosome is a complex organelle discovered inside the cytoplasm of living cells that produce proteins from amino acids during the cycle called protein synthesis.
c) The nucleolus is the structure present in the core of eukaryotic cells. Principally, it takes an interest in amassing the ribosomes, detects cell stress, etc.
Hence, the correct answer is option C.

Note: A histone is a protein that offers basic help to a chromosome. All together for extremely long DNA atoms to fit into the cell core, they fold over edifices of histone proteins, giving the chromosome a more conservative shape. A few variations of histones are related to the guideline of quality expression.