Which statement correctly describes the role of the rough endoplasmic reticulum?
Answer and explanation
Correct answer: B. It has ribosomes on its surface and makes proteins that are packaged for export
- Step 1: The rough ER is studded with ribosomes.
- Step 2: Proteins made there enter the ER, are modified and are sent on to the Golgi apparatus for secretion.
Answer
It has ribosomes on its surface and makes proteins that are packaged for export.
Why not the others: It has no ribosomes and makes lipids for the cell membrane: describes the smooth endoplasmic reticulum. It releases energy by oxidising glucose with oxygen: describes mitochondria. It contains digestive enzymes that break down old organelles: describes lysosomes.
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