Chapter 8, Problem 3A

Summary Introduction

To replace:

The italicized word with a correct vocabulary term in the given sentence

Introduction: All living organisms use energy to carry out biological processes. Energy is the ability to do work. Thermodynamics is the study of flow and transformation of energy in the universe.

Answer to Problem 3A

Energy can exist in many forms.

Explanation of Solution

There are many forms of energy like light energy, mechanical energy, heat energy and chemical energy. In living organisms, chemical energy is stored in organic compounds and this energy is converted to other forms of energy. The chemical energy in biological molecules is converted to mechanical energy when muscles contract.

Adenosine triphosphate or ATP is the most important biological molecule that provides chemical energy.