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Multiple Choice
How are the rough endoplasmic reticulum (ER) and smooth endoplasmic reticulum (ER) different?
A
The rough ER contains ribosomes on its surface, while the smooth ER does not.
B
The rough ER is involved in detoxification processes, while the smooth ER is not.
C
The rough ER is responsible for lipid synthesis, while the smooth ER is responsible for protein synthesis.
D
The rough ER is involved in protein synthesis, while the smooth ER is involved in lipid synthesis.
Verified step by step guidance
1
Understand the structure of the endoplasmic reticulum (ER): The ER is a network of membranes within the cell, and it comes in two forms - rough and smooth.
Identify the rough ER: The rough ER is characterized by the presence of ribosomes on its surface, which gives it a 'rough' appearance under a microscope.
Identify the smooth ER: The smooth ER lacks ribosomes on its surface, giving it a 'smooth' appearance.
Differentiate their functions: The rough ER is primarily involved in protein synthesis due to the presence of ribosomes, which are the sites of protein assembly.
Differentiate their functions further: The smooth ER is involved in lipid synthesis and detoxification processes, as it does not have ribosomes and thus does not directly participate in protein synthesis.