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Endoplasmic Reticulum

The endoplasm...

Question

The endoplasmic reticulum is involved in

A

Proteolysis

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B

Peptide bond formation

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C

Both A and B

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D

Fatty acid and cholesterol synthesis

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Solution

The correct option is D Fatty acid and cholesterol synthesis

Endoplasmic reticulum (ER) is the membrane bound organelle. It is of two types rough endoplasmic reticulum and smooth endoplasmic reticulum.Endoplasmic reticulum function is for the synthesis of lipids, synthesis of proteins, transportation of molecules to the cell membrane for export but not for the production of ribosomes. It is done by the nucleolus present within the nucleus.
Hence, the correct answer is 'Fatty acid and cholesterol synthesis'.

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Similar questions

Q. Assertion :The endoplasmic reticulum which lacks ribosomes is called smooth endoplasmic reticulum (SER). Reason: SER is mainly involved in protein synthesis.

Match the following:-

a) endoplasmic reticulum I) synthesis and storage of lipids

b)sphaerosome II)detoxification of drugs

Q. Consider the following statements
(a) Endomembrane system includes mitochondria, chloroplast and peroxisomes
(b) Smooth endoplasmic reticulum is a major site for synthesis of lipid
(c) Rough endoplasmic reticulum is actually involved in protein synthesis
(d) Mitochondrial matrix possesses single circular DNA, a few RNAs and 80 S ribosomes
Of the above statements ______________________.

Q. Golgi body and endoplasmic reticulum are:
A. made up of cisternae, vesicle and tubule
B. part of endomembrane system
C. involved in glycosylation of protein
D. involved in synthesis of protein.

Q. Which is/are not the correct function(s) of endoplasmic reticulum?

I. RER is involved in the protein synthesis, and responsible for post-translational modifications of the polypeptide chain.

II. RER is involved in synthesis of glycoproteins and glycolipids.

III. SER of liver cells is involved in detoxification of toxins and drugs.

IV. SER is also involved in synthesis and storage of lipids including cholesterol and phospholipids.

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