QQuestionBiology
QuestionBiology
Which statements characterize smooth ER?
A. It does not have ribosomes attached to it.
B. It is continuous with rough ER.
C. It is not continuous with rough ER.
D. It has ribosomes attached to it.
E. It stores lipids.
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Answer
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Step 1:I'll solve this problem step by step, focusing on the characteristics of smooth endoplasmic reticulum (smooth ER).
Step 2:: Understand the Structure of Smooth ER
Smooth ER is a type of endoplasmic reticulum that differs from rough ER in several key ways: - It lacks ribosomes on its surface - It has a smooth appearance under microscopic examination - It plays different cellular roles compared to rough ER
Step 3:: Analyze Each Statement
A. It does not have ribosomes attached to it. - This statement is CORRECT. Smooth ER lacks ribosomes, which is its defining characteristic. B. It is continuous with rough ER. - This statement is CORRECT. Smooth ER and rough ER are actually part of the same continuous membrane system within the cell. C. It is not continuous with rough ER. - This statement is FALSE. Smooth ER and rough ER are interconnected membrane networks. D. It has ribosomes attached to it. - This statement is FALSE. Ribosomes are specifically a feature of rough ER, not smooth ER. E. It stores lipids. - This statement is CORRECT. Smooth ER is involved in lipid synthesis and storage.
Final Answer
A. It does not have ribosomes attached to it. B. It is continuous with rough ER. E. It stores lipids.
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