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Multiple Choice
What is the primary difference between rough and smooth endoplasmic reticulum in eukaryotic cells?
A
Rough endoplasmic reticulum is responsible for detoxification, while smooth endoplasmic reticulum is responsible for calcium storage.
B
Rough endoplasmic reticulum is involved in lipid synthesis, while smooth endoplasmic reticulum is involved in protein synthesis.
C
Rough endoplasmic reticulum has ribosomes on its surface, while smooth endoplasmic reticulum does not.
D
Rough endoplasmic reticulum is found only in plant cells, while smooth endoplasmic reticulum is found only in animal cells.
Verified step by step guidance
1
Understand the structure and function of the endoplasmic reticulum (ER) in eukaryotic cells. The ER is a network of membranes within the cell that plays a crucial role in the synthesis of proteins and lipids.
Differentiate between the two types of ER: rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER).
Recognize that the rough endoplasmic reticulum is characterized by the presence of ribosomes on its surface, which gives it a 'rough' appearance under a microscope. These ribosomes are the sites of protein synthesis.
Identify that the smooth endoplasmic reticulum lacks ribosomes on its surface, which makes it appear 'smooth.' The SER is involved in lipid synthesis, detoxification processes, and calcium ion storage.
Conclude that the primary difference between rough and smooth endoplasmic reticulum is the presence of ribosomes on the RER, which are absent on the SER, leading to their distinct functions in the cell.