Answers

2014-06-03T19:17:10+05:30
Characteristics-
1) They are rod shaped structure that are enclosed within two membranes -outer membrane and inner membrane . 
2 )  the membranes are made up of  phospholipids and proteins
3)The space in between two membranes is called inter membrane space which has same composition as the cytoplasm of cell .
Functions-
1)Main function is to produce energy from food.
2)Synthesis of  respiratory enzymes.
3)
 It also helps in building of certain parts of  blood and hormones like estrogens and testosterone . 

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2014-06-03T19:25:59+05:30
1.Various shape but usually sausage-like.                                                               
2.Double walled:inner wall thro
wn into folds.
3.Have their own DNA containing several genes.             

CHIEF FUNCTIONS:
1.Release of energy from pyruvic acid produced in cytoplasm,in the form of ATP.
2.Synthesis of respiratory enzymes.
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