<span>they do not have specific functions. hope this helped
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The answer is Fist hope I helped
Not always because there could be birth defects, mutations, or other variables.
Okay so there are two types of ERs, smooth and rough.
Rough endoplasmic reticulum contain ribosomes on the outer surface. It provides large surface area for proteinsynthesis and the synthesis of glycoproteins and also provides a pathway for the transport of materials.
Smooth ER synthesises, stores and transports lipids and carbohydrates.
Hope this helps
I believe that would be mostly oxygen