What is the structure and function of chromatin?
Chromatin is a complex of macromolecules composed of DNA, RNA, and protein, which is found inside the nucleus of eukaryotic cells. … The primary protein components of chromatin are histones that help to organize DNA into “bead-like” structures called nucleosomes by providing a base on which the DNA can be wrapped around.
What is chromatin reticulum Class 9?
Chromatin is the mass of genetic material (composed of DNA and proteins) located in the cell nucleus that condense to form chromosomes during eukaryotic cell division. Class 9 Chromatin vs.
What is chromatin name two components of chromatin?
The two main components of chromatin are DNA and histones.
Where is nucleus located in a cell class 9?
Nucleus is centrally located spherical cellular component.It has a double layer covering called cellular nuclear membrane.
What is chromosome structure and function?
Chromosomes, the thread-like structures are located inside the nucleus of all animal and plant cells. … Chromosomes are composed of DNA, histones, non-histone proteins, RNA and nucleic acids that help in the overall functioning of the cell for growth, reproduction and survival.
What is cytoplasm Class 9?
The part of the cell which occurs between plasma membrane and nuclear membrane is called cytoplasm. The inner granular mass of cytoplasm is called endoplasm. … Cytoplasm consist of an aqueous ground substance called Cytosol which contain variety of cell organelles.,insoluble waste,storage products.
What is DNA Class 9?
Deoxyribonucleic acid is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
What is Nucleoid in biology class 9?
Nucleoid is the undefined nuclear region containing only nucleic acids, in the prokaryotic cells. It is not bounded by a nuclear membrane and lies in direct contact with the cytoplasm.