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Question

The organelle in which aerobic respiration occurs in a cell is


Your Answer
A
ribosome
Your Answer
B
endoplasmic reticulum
Your Answer
C
dictyosome
Correct Answer
D
mitochondrion

Solution

The correct option is D mitochondrion
Mitochondria are double membraned organelles involved in the complete oxidation of glucose and fatty acids. into carbon dioxide, water and energy. It is the main site of aerobic respiration. The bonds in the substrates are broken down in the presence of oxygen to release energy. The energy liberated is stored in the form of ATP. 

Ribosomes are roughly spherical organelles found that are involved in protein synthesis. They are also called ‘protein factories’ of the cell.

Golgi apparatus in plants is also called dictyosomes. Dictyosomes consist of an unconnected network of tubules and cisternae. The Golgi apparatus is involved in processing, packaging and transport of materials for secretion.

The endoplasmic reticulum is an intracellular membranous network extending from the nuclear membrane to the cell membrane. Some functions of endoplasmic reticulum include providing mechanical support by acting as an intracellular skeleton. It also acts as a transport system within the cell. The lumen of the membrane lined channels provide a large surface area inside a cell for physiological activities.

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