What is Life? A Guide to Biology with Physiology
3rd Edition
ISBN: 9781464157745
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 22, Problem 13SA
Summary Introduction
To analyze:
How mammals that don't have enzymes for the digestion of cellulose are able to extract nutrients from foods that contain cellulose.
Introduction:
Various bacteria live in the digestive organs of animals that consume cellulose-rich foods.
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What is the difference between starch and cellulose that makes one digestible and the other not digestible to humans? Explain and illustrate.
When young rats are placed on a completely fat-free diet, they grow poorly, develop a scaly dermatitis, lose hair, and soon die.
These symptoms can be prevented if linoleate or plant material is included in the diet.
What makes linoleate an essential fatty acid?
Animals lack the enzymes required to synthesize long-chain fatty acids with 14 or more carbons.
Animals lack the enzymes required to synthesize odd-number fatty acids.
Animals lack the enzymes required to synthesize polyunsaturated fatty acids.
Animals lack the enzymes required to introduce double bonds into fatty acids beyond the A9 position.
List four components required for animals and plants to provide an essential nutrition (two each).
Chapter 22 Solutions
What is Life? A Guide to Biology with Physiology
Ch. 22 - Prob. 1SACh. 22 - Prob. 2SACh. 22 - Prob. 3SACh. 22 - Prob. 4SACh. 22 - Prob. 5SACh. 22 - Prob. 6SACh. 22 - Prob. 7SACh. 22 - Prob. 8SACh. 22 - Prob. 9SACh. 22 - Prob. 10SA
Ch. 22 - Prob. 11SACh. 22 - Prob. 12SACh. 22 - Prob. 13SACh. 22 - Prob. 14SACh. 22 - Prob. 15SACh. 22 - Prob. 16SACh. 22 - Prob. 1MCCh. 22 - Prob. 2MCCh. 22 - Prob. 3MCCh. 22 - Prob. 4MCCh. 22 - Prob. 5MCCh. 22 - Prob. 6MCCh. 22 - Prob. 7MCCh. 22 - Prob. 8MCCh. 22 - Prob. 9MCCh. 22 - Prob. 10MCCh. 22 - Prob. 11MCCh. 22 - Prob. 12MCCh. 22 - Prob. 13MCCh. 22 - Prob. 14MCCh. 22 - Prob. 15MC
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