Mitochondria - Description and Function
For: Science Class 11
Mitochondria (Mitochondrion)
Its shape is variable and the size range from 2-6 micrometer. It is double membrane structure. Its outer membrane is smooth and regular. Its inner membrane gives finger like projections towards inner side called cristae. The surface of the cristae contains number of stalked and globular proteins called oxysomes. The cavity bounded by membrane is filled with a liquid mass called matrix. The matrix contains DNA RNA, inorganic and organic molecules. The mitochondria have its own DNA so it expresses its nature and characters own self. It is distributed in the cytoplasm.
Function of mitochondria
It stores various types of enzymes used in aerobic respiration. It releases energy during oxidation of food material in aerobic respiration and stores energy in the form of ATPs so it is considered as the powerhouse of the cell. It can synthesize some proteins and it is carrier of genetic material.
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