The Question is from neet-botany biomolecules-biology lipid, and it was created by the author D VINOD

Question

Which of the following is NOT a lipid?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Classification of biomolecules
 **Related Topics**: Lipids, carbohydrates, macromolecules
 **Prerequisites**: Basic understanding of the structure and function of major biomolecules.
## SOLUTION PATHWAY
**Given Information**:
  Options: Cholesterol, Triglyceride, Glycogen, Phospholipid
  Question: Identify the non-lipid molecule.
**Method & Steps**:
 1. Identify the chemical nature of each option.
  Reasoning: Lipids are a diverse group of hydrophobic or amphipathic molecules. They are largely composed of carbon and hydrogen atoms, with a few oxygen atoms.
  Formula/Rule: No specific formula applies to all lipids, as their structures vary widely.
 2. Analyze the structure of each option.
  Working: 
   * Cholesterol: A steroid lipid, characterized by a four-ring structure.
   * Triglyceride:  An ester derived from glycerol and three fatty acids. 
   * Glycogen: A polysaccharide (a carbohydrate) made of glucose units. 
   * Phospholipid:  A lipid containing a phosphate group, crucial components of cell membranes.
  Key Point: Carbohydrates are composed of carbon, hydrogen, and oxygen, usually in a 1:2:1 ratio, and are hydrophilic.
 3. Determine which option is NOT a lipid.
  Result: Glycogen is a carbohydrate, not a lipid.
  Verification:  Cholesterol, triglycerides, and phospholipids all share the defining characteristics of lipids: they are largely hydrophobic and composed primarily of carbon and hydrogen atoms.
 ## OPTION ANALYSIS
A ✓: Cholesterol is a type of steroid lipid.
B :x: Triglycerides are esters formed from glycerol and fatty acids, making them lipids.
C :x: Glycogen is a polysaccharide, a type of carbohydrate. It is not a lipid.
D :x: Phospholipids are lipids that are crucial components of cell membranes.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing lipids with carbohydrates: Lipids are hydrophobic, while carbohydrates are generally hydrophilic.
  How to avoid: Focus on the structural differences and functional groups present in each molecule.
  2.Overlooking the structural diversity of lipids: Lipids are a broad class of molecules with varied structures. 
  How to avoid:  Learn about the different types of lipids (e.g., triglycerides, phospholipids, steroids).
 **Quick Tips**:
  1.Remember the key features of lipids: hydrophobic nature, primarily composed of C and H.
  2.Memorize the general structures of common lipids (e.g., glycerol backbone in triglycerides).

D VINOD · Answer

Cholesterol

D VINOD · Answer

Triglyceride

D VINOD · Answer

The correct Option is "Glycogen"

D VINOD · Answer

Phospholipid

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