What is the chemical composition of chromosomes Class 9?

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What is chemical composition of chromosomes?

The major chemical components of the chromosome are DNA, RNA (nucleic acids), and proteins (histones and nonhistones).

What is the composition of chromosome Class 9?

Chromosomes are composed of DNA and histone proteins alongwith a constriction point called as centomere. The chromosomes are made up in the nucleus.

What is the chemical composition of chromosomes Class 10?

The chemical composition of a chromosome is DNA and histone proteins.

What are the 2 chemical components of chromosomes?

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Question Answer
What are the two chemical components of chromosomes? Proteins and DNA
Why did researchers originally think that protein was the genetic material? Proteins have great heterogeneity and specificity of function, which were essential for the genetic material.

What is the chemical composition of cell wall?

The cell wall is mainly composed of carbohydrate rich materials. The major components of cell wall are cellulose, pectins, hemicelluloses, proteins and phenolics. The cell wall is a biphasic structure consisting of relatively rigid cellulosic microfibril embedded in gel-like non-cellulosic matrix.

What is the chemical composition of a gene?

Genes are made of nucleic acids, linear molecules consisting of a string of four nucleotides, which, in deoxyribonucleic acid (DNA), are adenine (A), thymine (T), guanine (G) and cytosine (C).

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What is the chemical composition of nucleus?

The nucleus contains mainly nucleoproteins composed of nucleic acid and proteins, besides enzymes and inorganic salts.

What are cell organelles Class 9?

Class 9 Question

An organelle is a tiny cellular structure that performs specific functions within a cell. Organelles are embedded within the cytoplasm of eukaryotic and prokaryotic cells. In the more complex eukaryotic cells, organelles are often enclosed by their own membrane.

What is cytoplasm according to class 9?

A thick solution composed of water, salts, and proteins that fills the cell is called cytoplasm. It is surrounded by cell membrane. The nucleus of the cell is surrounded by the cytoplasm.