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

Question

Amylose, a component of starch, is composed of glucose monomers linked predominantly by which type of glycosidic bond?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
	**Primary Concept**: Glycosidic bonds in carbohydrates
	**Related Topics**: Starch structure, Amylose structure, Glucose, Polysaccharides
	**Prerequisites**: Understanding of monosaccharides, glycosidic bond formation, alpha and beta anomers.
## SOLUTION PATHWAY
**Given Information**:
		Amylose is a component of starch.
		Amylose is composed of glucose monomers.
**Method & Steps**:
	1. Identify the type of linkage in amylose.
		Reasoning: Amylose is a linear polysaccharide.  The glucose units are linked in a specific manner to form this linear chain.
		Formula/Rule:  Glycosidic bonds link monosaccharides in polysaccharides.  The type of bond (α or β) and the carbon atoms involved determine the polysaccharide's structure and properties.
	2. Determine the type of glycosidic bond.
		Working: Amylose is characterized by its α-1,4-glycosidic bonds. These bonds link the carbon 1 of one glucose molecule to the carbon 4 of the next glucose molecule in an alpha configuration.
		Key Point: The α configuration is crucial; a β-1,4-glycosidic bond would result in cellulose, a very different polysaccharide.
	3. Select the correct option.
		Result: α-1,4-glycosidic bonds
		Verification: This is the defining characteristic of amylose's structure.
## OPTION ANALYSIS
[A] ✓: $\alpha$-1,4-glycosidic bonds: Correct. This is the predominant linkage in amylose, resulting in its helical structure.
[B] :x: $\beta$-1,4-glycosidic bonds: Incorrect. This linkage is found in cellulose, not amylose.
[C] :x: $\alpha$-1,6-glycosidic bonds: Incorrect. While some branching may occur in amylopectin (another component of starch), amylose is primarily a linear polymer with α-1,4 linkages.
[D] :x: $\beta$-1,6-glycosidic bonds: Incorrect. This type of linkage is not common in starch.
## LEARNING AIDS
	**Common Mistakes**:
		1.Confusing α and β linkages: Remember that α linkages lead to starch (amylose and amylopectin) and glycogen, while β linkages lead to cellulose.
		2.Overlooking the importance of the carbon numbers:  The numbers (1,4 or 1,6) specify which carbons are involved in the bond formation.
	**Quick Tips**:
		1.Amylose = linear = α-1,4
		2.Cellulose = linear = β-1,4

Mr. NARESH KUMAR K · Answer

The correct Option is "α-1,4-glycosidic bonds"

Mr. NARESH KUMAR K · Answer

β-1,4-glycosidic bonds

Mr. NARESH KUMAR K · Answer

α-1,6-glycosidic bonds

Mr. NARESH KUMAR K · Answer

β-1,6-glycosidic bonds

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