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The main organelle involved in modification and routing of newly synthesized proteins to their destinations is -
A
Endoplasmic Reticulum
B
Lysosome
C
Mitochondria
D
Chloroplast
Detailed Solution
Proteins destined for secretion, for the plasma membrane or for lysosomes are synthesised on ribosomes attached to the rough endoplasmic reticulum.
As they enter the lumen of the ER they are folded, and their modification begins (for example the addition of oligosaccharides, i.e. glycosylation).
From the ER they are packed into vesicles and sent to the Golgi apparatus for further modification, sorting and dispatch to their destinations.
Among the given choices, the endoplasmic reticulum is the organelle involved in the modification and routing of newly synthesised proteins.
Lysosomes digest materials, and mitochondria and chloroplasts are concerned with energy conversion.
So the answer is the endoplasmic reticulum.
As they enter the lumen of the ER they are folded, and their modification begins (for example the addition of oligosaccharides, i.e. glycosylation).
From the ER they are packed into vesicles and sent to the Golgi apparatus for further modification, sorting and dispatch to their destinations.
Among the given choices, the endoplasmic reticulum is the organelle involved in the modification and routing of newly synthesised proteins.
Lysosomes digest materials, and mitochondria and chloroplasts are concerned with energy conversion.
So the answer is the endoplasmic reticulum.