Concerning the nitrogen- containing bases that participate in nucleotides, what is the difference between DNA and RNA?

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter14: Dna Structure And Replication
Section14.2: Dna Structure
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Concerning the nitrogen- containing bases that participate in nucleotides, what is the difference between DNA and RNA?

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Step 1: Introduction

All living organisms store their genetic information in form of DNA / RNA.

This genetic information is present in the nucleus of  a cell and is responsible for passing the traits from parents to offspring and for coding proteins necessary for bodily functions.

DNA is made of units called as nucleotide. Each Nucleotide is made of 3 molecules – deoxyribose sugar, phosphate group and a nitrogen base.

These nitrogen bases in DNA/RNA are classified into 2 groups based on their chemical structure.

These 2 groups are – pyrimidines and purines.

 

Step 2: Explanation

 

Biology homework question answer, step 2, image 1

 

Biology homework question answer, step 2, image 2

 

Purines and pyrimidine bases are complementary to each other.

Guanine pairs with Cytosine forming 3 hydrogen bonds.

Adenine pairs with Thymine forming 2 hydrogen bonds (In case of RNA Uracil replaces Thymine).

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