What is the definition of endoplasmic reticulum?

Answer 1

It's a collection of enzymes performing specialized tasks.

There are two different kinds of ER: rough ER and smooth ER.

The synthesis of lipids and carbohydrates takes place in the smooth ER.

Since the ER contains ribosomes, which are protein producers, it is clear that the rough ER is in charge of making and altering proteins.

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Answer 2

William Albracht

A network of membranes called the endoplasmic reticulum (ER) is present in all eukaryotic cells. It is separated into two regions: the smooth endoplasmic reticulum (SER), which is involved in lipid metabolism, detoxification, and calcium storage, and the rough endoplasmic reticulum (RER), which is studded with ribosomes and involved in protein synthesis.

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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.