Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 8, Photosynthesis - Standardized Test Prep - Page 247: 1



Work Step by Step

Both autotrophs and heterotrophs need energy obtained from food to be able to power their different metabolic processes occurring within their cells. The difference between the two types of organisms is that autotrophs can make their own food by harnessing light from the sun as an energy source to combine carbon dioxide and water to make glucose whereas heterotrophs cannot make their own food and must take in their food through the consumption of other organisms.
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