CBSE Class 9 Answered
define cell and its all organelles? with diagram?
Asked by Lakshay Sharma | 13 May, 2012, 03:07: PM
Expert Answer
Cell is an autonomous self-replicating unit that may exist as functional independent unit of life (as in unicellular organism), or as sub-unit in a multicellular organism (as in plants and animals) that is specialized into carrying out particular functions towards the cause of the organism as a whole.
There are two distinct types of cells: prokaryotic cells (e.g. bacterial cells) and eukaryotic cells (e.g. plant or animal cell).
Cell-organelle is a membrane-bound compartment or structure in a cell that performs a special function.
Organelles in eukaryotic cells: Nucleus, endoplasmic reticulum, golgi apparatus, mitochondria, vacuoles, lysosome, centrosome and chloroplast (plastid)
Organelles in prokaryotic cells - Carboxysome (a protein-shell compartment for carbon fixation in some bacteria), chlorosome (a light harvesting complex in green sulfur bacteria), magnetosome (found in magnetotactic bacteria) etc.
Answered by | 14 May, 2012, 09:15: AM
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