What Is Life? A Guide to Biology with Physiology
What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 4, Problem 1SA
Summary Introduction

To review:

The key features of a cell.

Introduction:

Cells are the smallest unit of life.

Expert Solution & Answer
Check Mark

Explanation of Solution

Cells are what make up all forms of life in the world. They are the smallest unit of life that can exist independently and carry out all the biochemical processes that sustain life.

A cell is made up of genetic material consisting of Deoxyribonucleic Acid or DNA, and a jelly like substance called cytoplasm consisting of water, salts, and other chemicals. These are enclosed inside a cell membrane.

Cells arise only from preexisting cells.

Conclusion

The key features of a cell are

  1. They are the smallest unit of life that can live independently.
  2. All forms of life are made of one or more cells.
  3. Cells arise only from preexisting cells.

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