The Question is from neet-botany cell-biology , and it was created by the author Mr. NARESH KUMAR K

Question

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Smooth Endoplasmic Reticulum (SER) functions
 **Related Topics**: Cell organelles, protein synthesis, lipid metabolism, detoxification
 **Prerequisites**: Basic understanding of cell biology and organelle functions.
## SOLUTION PATHWAY
**Given Information**:
  The question asks to identify a function NOT performed by the smooth endoplasmic reticulum.
  Options: Lipid synthesis, detoxification of drugs, calcium storage, protein synthesis.
**Method & Steps**:
 1. Review the functions of the smooth endoplasmic reticulum.
  Reasoning: The SER is involved in various metabolic processes, differing from the rough ER (RER) which is primarily involved in protein synthesis.
 2. Analyze each option.
  Working: 
        * **Lipid synthesis:** The SER synthesizes lipids, including phospholipids and steroids.
        * **Detoxification of drugs:** The SER contains enzymes that detoxify drugs and other harmful substances.
        * **Calcium storage:** The SER stores calcium ions, which are important for various cellular processes.
        * **Protein synthesis:**  Protein synthesis is the primary function of the rough endoplasmic reticulum (RER), due to the presence of ribosomes. The SER lacks ribosomes and thus does not synthesize proteins.
 3. Identify the option that is NOT a function of the SER.
  Result: Protein synthesis is not a function of the smooth endoplasmic reticulum.
  Verification:  The absence of ribosomes on the SER confirms this. 
 ## OPTION ANALYSIS
A ✓: Lipid synthesis is a key function of the SER.
B :x: Detoxification of drugs is a major role of the SER.
C :x: Calcium storage is another important function of the SER.
D :x: Protein synthesis is the function of the rough endoplasmic reticulum (RER), not the smooth ER.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the functions of the smooth ER and rough ER: Remember that the key difference lies in the presence or absence of ribosomes.
  2.Overlooking the detoxification role of the SER: The SER plays a crucial role in metabolizing and eliminating toxins.
 **Quick Tips**:
  1.Remember the acronym SER for Smooth Endoplasmic Reticulum, and associate it with lipid synthesis, detoxification, and calcium storage.
  2.Visualize the difference between the smooth and rough ER: Smooth ER appears smooth under a microscope due to the lack of ribosomes.

Mr. NARESH KUMAR K · Answer

Lipid synthesis

Mr. NARESH KUMAR K · Answer

Detoxification of drugs

Mr. NARESH KUMAR K · Answer

Calcium storage

Mr. NARESH KUMAR K · Answer

The correct Option is "Protein synthesis"

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