Inquiry into Life
Inquiry into Life
15th Edition
ISBN: 9781259426162
Author: Sylvia S. Mader Dr., Michael Windelspecht
Publisher: McGraw-Hill Education
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Chapter 23, Problem C2BYB
Summary Introduction

To discuss:

The role of DNA (deoxyribonucleic acid) and proteins in a cell.

Introduction:

DNA is considered as a blueprint of a cell, as it plays an important role in long-term information storage. DNA is the genetic material of all living organisms and viruses except RNA viruses. Proteins are polymers of amino acids that play structural, functional and regulatory roles in cells.

Expert Solution & Answer
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Explanation of Solution

DNA: DNA is present in all living organisms and in some viruses. DNA is made up of the ribose sugar, a nitrogenous base, and a phosphate group. DNA plays an important role in a cell as it contains all the information required by a cell for its development and function. It acts as a genetic material and helps in the transfer of hereditary information.

Protein: Proteins are complex biomolecules, made up of long chains of amino acids. Proteins play many important roles in a cell. Proteins are needed for structure (keratin), function (hemoglobin), and regulation (enzymes).

Conclusion

DNA and protein playing important roles in a cell are considered as molecules of life. The proteins help in the maintenance of a normal structure and function in the body.

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Inquiry into Life

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