Science at a Distance

Biological Energy

This Bio-Module requires the use of the text book "Exploring Life" by Professor John Blamire.

Lecture Notes

a check up

Biological Energy Topic Guide
Lecture Notes - Part 2 Lecture Notes - Part 3

Use this department to check up on the accuracy of your lecture notes. Make sure that you have written down the following definitions, explanations and important concepts in your notes.

Biological Energy - Part One

A Calorie

A calorie is the amount of energy required to raise the temperature of one gram of water from 14.5 to 15.5 degrees centigrade.

Laws of Thermodynamics

First Law: Energy can neither be created nor destroyed, only converted from one form into another

Second Law: The amount of usable energy in the universe is steadily decreasing, while the level of disorganization is steadily increasing.

Life and Energy

All living organisms transform energy from one kind to another during their natural processes.

Life, Chemical Reactions and Energy

Inside all cells, millions of chemical reactions are taking place every second. During each of these chemical reactions, energy transformations are taking place. During some chemical reactions organized energy is converted into disorganized energy, these are termed "energy out" or exergonic reactions. During other chemical reactions energy must be added from outside. These reactions are termed "energy in" or endergonic reactions.


Any chemical reaction that joins together smaller components into a larger molecule is called a "synthetic" reaction.

Test Yourself with Quick Check Number BE-1025
Lecture Notes - Part 2 Lecture Notes - Part 3
Biological Energy - Topic Guide Science at a Distance

Science at a Distance
© 1997, Professor John Blamire