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What is the difference in structure of the rough and smooth endoplasmic reticulum?

Answer 1

Rough endoplasmic reticulums have ribosomes while smooth endoplasmic lack.

The ribosomes are the sites of photosynthesis found on the upper surface of the rough endoplasmic reticulums. The absence of ribosomes results in a smooth surface of the endoplasmic reticulums, whereas the presence of ribosomes on the surface of the rough endoplasmic reticulums appears rough. Thank you.

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Answer 2

Daniel Allen

In addition to being involved in protein synthesis and folding, the smooth endoplasmic reticulum (SER) lacks ribosomes and appears smooth, whereas the rough endoplasmic reticulum (RER) has ribosomes attached to its surface, giving it a rough appearance. The SER is also involved in lipid synthesis, detoxification, and calcium storage.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.