Question

what is rough and smooth substance​

Answer 1

Answer:

Substances that have very less friction.... Are said to be smooth

And those which have very high friction are said to be rough

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Answer 2

Answer:

Rough ER (RER) is involved in some protein production, protein folding, quality control and despatch. It is called 'rough' because it is studded with ribosomes. Smooth E R (SER) is associated with the production and metabolism of fats and steroid hormones...

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