describe the various components of a nucleus in a eukaryotic cell?
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nucleolus
chromatin reticulm
nucleoplasm
nuclear pore
nuclear sap
chromatin reticulm
nucleoplasm
nuclear pore
nuclear sap
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NUCLEUS:
nucleus was discovered by a scientist Robert Brown in 1831.it is spherical or oval in shape and is located in the centre in a young cell while in a mature cell it comes to lie on one side.
COMPONENTS OF NUCLEUS :
nuclear membrane :
the nucleus is surrounded by a thin , transparent membrane known as nuclear membrane. it separate the cytoplasm from the nucleus. the nuclear membrane has numerous large pores which help in direct communication between cytoplasm and the nucleoplasm.
nucleoplasm or karyolymph :
in the nucleus there is a sense but clear mass of protoplasm called nuclear sap or nucleoplasm. it contains enzymes and other complex substances which take part in the formation of DNA and THE.
chromatin network:
in the nucleoplasm a network of fine loosely connected threads is present called chromatin . the chromatin is the heredity material. in division of nucleus the chromatin forms a definite number of thread like structures called chromosome which contain heredity units in their surface,called gene. chemically chromatin consist of DNA and RNA.
nucleolus:
in each nucleus one or more globular bodies are present called nucleolus. they consist of protein and RNA. the nucleolus produces ribosomes which take part in protein synthesis. .
nucleus was discovered by a scientist Robert Brown in 1831.it is spherical or oval in shape and is located in the centre in a young cell while in a mature cell it comes to lie on one side.
COMPONENTS OF NUCLEUS :
nuclear membrane :
the nucleus is surrounded by a thin , transparent membrane known as nuclear membrane. it separate the cytoplasm from the nucleus. the nuclear membrane has numerous large pores which help in direct communication between cytoplasm and the nucleoplasm.
nucleoplasm or karyolymph :
in the nucleus there is a sense but clear mass of protoplasm called nuclear sap or nucleoplasm. it contains enzymes and other complex substances which take part in the formation of DNA and THE.
chromatin network:
in the nucleoplasm a network of fine loosely connected threads is present called chromatin . the chromatin is the heredity material. in division of nucleus the chromatin forms a definite number of thread like structures called chromosome which contain heredity units in their surface,called gene. chemically chromatin consist of DNA and RNA.
nucleolus:
in each nucleus one or more globular bodies are present called nucleolus. they consist of protein and RNA. the nucleolus produces ribosomes which take part in protein synthesis. .
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