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BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN:9781305967359
Author:STARR
Publisher:STARR
Chapter36: Digestion And Human Nutrition
Section: Chapter Questions
Problem 2CT
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1. A student is working on drawing and labeling a very basic model showing how
cellulose is broken down. The student's work on the model so far is shown below.
Based on the passage above, revise the student's model so that it is correct and
complete. Be sure to clearly identify all your revisions to the model.

Both humans and cows are able to consume plant matter made up of complex carbohydrates, such as starch or cellulose. However, a cow's digestive system is very different from that of a human. As a result, humans and cows differ in their ability to extract nutrients from plant-based food resources. For example, unlike humans, cows can thrive on grass, which is largely made up of cellulose. Cows are able to digest grass thanks to a complex community of microbes, including bacteria, in their digestive system. These bacteria produce cellulase, which starts the process of breaking down cellulose into smaller subunits of glucose. Cows then acquire energy as the microbes in their digestive system utilize the glucose to carry out fermentation. A by-product of fermentation by bacteria is methane gas (CH,). 1. A student is working on drawing and labeling a very basic model showing how cellulose is broken down. The student's work on the model so far is shown below. Based on the passage above, revise the student's model so that it is correct and complete. Be sure to clearly identify all your revisions to the model. Cellulase ( Active Site Cellulose
Transcribed Image Text:Both humans and cows are able to consume plant matter made up of complex carbohydrates, such as starch or cellulose. However, a cow's digestive system is very different from that of a human. As a result, humans and cows differ in their ability to extract nutrients from plant-based food resources. For example, unlike humans, cows can thrive on grass, which is largely made up of cellulose. Cows are able to digest grass thanks to a complex community of microbes, including bacteria, in their digestive system. These bacteria produce cellulase, which starts the process of breaking down cellulose into smaller subunits of glucose. Cows then acquire energy as the microbes in their digestive system utilize the glucose to carry out fermentation. A by-product of fermentation by bacteria is methane gas (CH,). 1. A student is working on drawing and labeling a very basic model showing how cellulose is broken down. The student's work on the model so far is shown below. Based on the passage above, revise the student's model so that it is correct and complete. Be sure to clearly identify all your revisions to the model. Cellulase ( Active Site Cellulose
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