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

Question

Which of the following is NOT a function associated with the smooth endoplasmic reticulum (SER)?

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 associated with the SER.
  Options: Lipid synthesis, Detoxification, Calcium ion storage, Glycosylation of proteins.
**Method & Steps**:
 1. Analyze each option's association with SER.
  Reasoning: We need to determine which process is primarily handled by another organelle.
 2. Identify the function not performed by SER.
  Working: Let's examine each option:
   a) Lipid synthesis: SER is heavily involved in lipid synthesis, including phospholipids and steroids.
   b) Detoxification of drugs and poisons: SER contains enzymes that detoxify harmful substances in liver cells.
   c) Calcium ion storage: SER acts as a calcium reservoir in muscle cells and other cell types.
   d) Glycosylation of proteins: This process is primarily carried out in the rough endoplasmic reticulum (RER), which has ribosomes attached to its surface for protein synthesis and modification.
 3. Determine the incorrect option.
  Result: Glycosylation of proteins is the function NOT associated with the SER.
  Verification:  The RER, with its ribosomes, is crucial for protein synthesis and post-translational modifications like glycosylation.
 ## OPTION ANALYSIS
A ✓: Lipid synthesis is a key function of the SER.
B ✓: Detoxification is a major role of the SER, particularly in the liver.
C ✓: Calcium storage is another important role of the SER.
D :x: Glycosylation of proteins is primarily a function of the rough endoplasmic reticulum (RER).
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing SER with RER:  Students may confuse the functions of the smooth and rough ER. Remember that the RER is studded with ribosomes and involved in protein synthesis and modification, while the SER is involved in lipid synthesis and detoxification.
  2.Overgeneralizing SER functions: SER functions can vary depending on the cell type.  While the options listed are common functions, not all SER in all cells performs all of them.
 **Quick Tips**:
  1.Remember the key structural difference: Ribosomes are present on RER but absent on SER.
  2.Associate SER with lipids and detoxification (think 'smooth' for lipids and 'smooth' operations of detoxification).

Mr. NARESH KUMAR K · Answer

Lipid synthesis

Mr. NARESH KUMAR K · Answer

Detoxification of drugs and poisons

Mr. NARESH KUMAR K · Answer

Calcium ion storage

Mr. NARESH KUMAR K · Answer

The correct Option is "Glycosylation of proteins"

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