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Which of the following is true of the endoplasmic reticulum?
The endoplasmic reticulum is made up of membrane-enclosed spaces used for the trafficking of materials that will be secreted from the cell. Therefore it is involved in exocytosis, not endocytosis. The smooth ER is involved in metabolism and lipid synthesis. The rough ER contains ribosomes accounting for its rough appearance and allowing it to be involved in protein synthesis.
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Which of the following statements about the Golgi apparatus are FALSE?
The Golgi aparatus does not synthesize lipids. Lipids are synthesized in the smooth ER.
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Which of the following accurately describes the rough endoplasmic reticulum and the smooth endoplasmic reticulum?
The rough endoplasmic reticulum is described as "rough" because it is covered in ribosomes, which look like tiny beads along its surface. The smooth endoplasmic reticulum doesn't have these ribosomes all over its surface, so it appears flat and is described as "smooth" for this reason. The ribosomes function to make proteins.
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