Biology
Biology
10th Edition
ISBN: 9780321794260
Author: Audesirk, Teresa/ Audesirk
Publisher: Pearson College Div
Question
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Chapter 11, Problem 1FIB
Summary Introduction

Introduction:

Deoxyribonucleic acid (DNA) is a genetic material which is responsible for passing information from one generation to other. It is a double helical structure that consists of two parallel strands made up of nucleotides.

Expert Solution & Answer
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Answer to Problem 1FIB

Correct answer:

DNA consists of subunits called nucleotide. Each subunit consists of three parts sugar, phosphate, and a nitrogenous base.

Explanation of Solution

The nucleotides are the main components of nucleic acid DNA. A nucleotide is composed of three units: a nitrogenous base, five carbon deoxyribose sugar, and a phosphate group. The two strands of helical DNA are anti-parallel to each other with nitrogenous bases stacked between the two strands giving it ladder-like appearance.

Conclusion

Nucleotides which consists of sugar, base, and phosphate group are the subunits of DNA.

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