Multiple choice

Which of the following cell organelles almost fills the space within the cell membrane?

  1. Mitochondria

  2. Golgi Complex

  3. Lysosomes

  4. Endoplasmic Reticulum

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D Correct answer
Explanation

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes.

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