Question

what is centrosome plz explain

Answer 1

In cell biology, the centrosome (Latin centrum 'center' + Greek sōma 'body') is an organellethat serves as the main microtubule organizing center (MTOC) of the animal cellas well as a regulator of cell-cycleprogression. The centrosome is thought to have evolved only in the metazoan lineage of eukaryotic cells.[1] Fungi and plants lack centrosomes and therefore use structures other than MTOCs to organize their microtubules.[2][3] Although the centrosome has a key role in efficient mitosis in animal cells, it is not essential in certain fly and flatworm species.[4][5][6]

Centrosomes are composed of two centriolesarranged at right-angles to each other, and surrounded by an amorphous mass of proteintermed the pericentriolar material (PCM). The PCM contains proteins responsible for microtubule nucleation and anchoring[7]including γ-tubulin, pericentrin and ninein. In general, each centriole of the centrosome is based on a nine triplet microtubule assembled in a cartwheel structure, and contains centrin, cenexin and tektin.[8] In many cell types the centrosome is replaced by a cilium during cellular differentiation. However, once the cell starts to divide, the cilium is replaced again by the centrosome.


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Answer 2

Hey mate here is your ans.....





In cell biology, the centrosome is an organelle that is the main place where cell microtubules are organized. Also, it regulates the cell division cycle, the stages which lead up to one cell dividing in two.


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