The Question is from neet-botany molecular-basis-of-inheritance dna, and it was created by the author D VINOD

Question

Which of the following is NOT a component of a DNA nucleotide?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [Option D]
## CONCEPT FRAMEWORK
	**Primary Concept**: Components of DNA nucleotides
	**Related Topics**: Structure of nucleic acids, ribonucleic acid (RNA)
	**Prerequisites**: Basic knowledge of molecular biology
## SOLUTION PATHWAY
**Given Information**:
		1. DNA is made of nucleotides, which are the building blocks of the DNA structure.
		2. A DNA nucleotide consists of three main components: a deoxyribose sugar, a phosphate group, and a nitrogenous base.
**Method & Steps**:
	1. Identify the components of a DNA nucleotide.
		Reasoning: DNA nucleotides have specific components that define their structure.
		Formula/Rule: 
		- DNA nucleotide = Deoxyribose sugar + Phosphate group + Nitrogenous base
	2. Examine the given options to ascertain which one does not belong to the DNA nucleotide structure.
		Working: The options presented include:
		- **Option A**: Deoxyribose sugar (component of DNA nucleotide)
		- **Option B**: Phosphate group (component of DNA nucleotide)
		- **Option C**: Nitrogenous base (component of DNA nucleotide)
		- **Option D**: Ribose sugar (not a component of DNA; it is found in RNA)
		Key Point: Ribose sugar is a component of RNA, not DNA.
	3. Conclude which option is not a component of DNA nucleotides.
		Result: Option D is the correct answer as ribose sugar is not part of DNA.
		Verification: All other options are indeed components of DNA nucleotides.
## OPTION ANALYSIS
[A] :x: Deoxyribose sugar is a key component of DNA nucleotides.
[B] :x: Phosphate group is essential in forming the backbone of DNA.
[C] :x: Nitrogenous base is a crucial part of the nucleotide structure.
[D] ✓: Ribose sugar is not a component of DNA nucleotides; it is found in RNA instead.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing ribose sugar with deoxyribose: Remember that deoxyribose has one less oxygen atom than ribose.
		2. Misidentifying components of nucleotides: Review the structure of DNA and RNA for clarity.
	**Quick Tips**:
		1. Associate 'deoxy' with DNA to recall the sugar component.
		2. Use mnemonic devices to remember the components: "DPN" (Deoxyribose, Phosphate, Nitrogenous base).

D VINOD · Answer

Deoxyribose sugar

D VINOD · Answer

Phosphate group

D VINOD · Answer

Nitrogenous base

D VINOD · Answer

The correct Option is "Ribose sugar"

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