write a short notes on (a)cytoplasm (b)Nucleus of cell (expalin breifly)
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Cytoplasm:
The cytoplasm refers to the contents of a living cell in prokaryotes and the region between the plasma membrane and the nucleus of a eukaryotic cell. More precisely, the protoplasm delimited by the plasma membrane consists of the cytoplasm and the nucleus in the eukaryotic cells, but of the cytoplasm alone for the prokaryotic cells. It consists of about 80% water and is defined as a colloidal emulsion with a granular appearance consisting of cytosol, an aqueous solution of mineral salts and various organic compounds which together with the cytoskeleton form the hyaloplasm. In eukaryotes, the cytoplasm includes several organelles such as endoplasmic reticulum, vacuoles, mitochondria or chloroplasts, but does not include the nucleus (the content of which is called the nucleoplasm). It also includes ribosomes, which are not considered organelles. In prokaryotes, the cytoplasm encompasses all the cellular material contained in the internal (or cytoplasmic) membrane. It contains no organelles but ribosomes, reserves, plasmids and a circular chromosome.
Nucleus of Cell:
The nucleus is a cellular structure present in the majority of eukaryotic cells and in all eukaryotic organisms and containing most of the genetic material of the cell (DNA). Its main function is to store the nuclear gene as well as the machinery necessary for the replication of chromosomes and the expression of the information contained in the genes. It temporarily disappears during the cell division process to reconstitute in the daughter cells. It has a diameter varying from 5 to 7 micrometers. In comparison with certain organelles, it is therefore an important cellular structure. Generally it is the most visible organelle on the microscopic scale.
The cytoplasm refers to the contents of a living cell in prokaryotes and the region between the plasma membrane and the nucleus of a eukaryotic cell. More precisely, the protoplasm delimited by the plasma membrane consists of the cytoplasm and the nucleus in the eukaryotic cells, but of the cytoplasm alone for the prokaryotic cells. It consists of about 80% water and is defined as a colloidal emulsion with a granular appearance consisting of cytosol, an aqueous solution of mineral salts and various organic compounds which together with the cytoskeleton form the hyaloplasm. In eukaryotes, the cytoplasm includes several organelles such as endoplasmic reticulum, vacuoles, mitochondria or chloroplasts, but does not include the nucleus (the content of which is called the nucleoplasm). It also includes ribosomes, which are not considered organelles. In prokaryotes, the cytoplasm encompasses all the cellular material contained in the internal (or cytoplasmic) membrane. It contains no organelles but ribosomes, reserves, plasmids and a circular chromosome.
Nucleus of Cell:
The nucleus is a cellular structure present in the majority of eukaryotic cells and in all eukaryotic organisms and containing most of the genetic material of the cell (DNA). Its main function is to store the nuclear gene as well as the machinery necessary for the replication of chromosomes and the expression of the information contained in the genes. It temporarily disappears during the cell division process to reconstitute in the daughter cells. It has a diameter varying from 5 to 7 micrometers. In comparison with certain organelles, it is therefore an important cellular structure. Generally it is the most visible organelle on the microscopic scale.
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(a) Cytoplasm- it is a cell sap which consists of all cell organelles including nucleus and it is bounded by cell membrane
(b) nucleus -it is the brain of the cell which consists of dna in it and controls all the cell organelles
(b) nucleus -it is the brain of the cell which consists of dna in it and controls all the cell organelles
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