Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 39, Problem 2CT
A python can survive by eating a large meal once or twice a year. When it does eat, microvilli in its small intestine lengthen fourfold and its stomach pH drops from 7 to 1. Explain the benefits or these changes.
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The small intestine of the pig has significantly more surface area (through folds and villi) than
that of the frog, and if you were to remove them, the small intestine of the pig is several times
longer than that of the frog. This additional surface area maximizes nutrient absorption by the
pig. Why might the pig need more energy from its food than the frog?
Explain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.
Experiments have been done on mice where they take away nucleic acids from their diets. Their findings showed that the mice without nucleic acids in their diet grew more slowly and also has shorter villi in their small intestines. Why might it make sense that a mouse with shorter intestinal villi would have slower growth?
1-Shorter villi in the small intestine would mean a reduced ability to absorb food only.
2-Shorter villiv inthe small intestine would mean a reduced aboilty to dihgest food and a reduced ability to absorb food.
3-Shorter villi in the small intestine would mean a reduced ability to digest food only.
4-shorter villi in the small intestine would mean a reduced ability to digest food and an increased ability to absorb food.
Chapter 39 Solutions
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
Ch. 39 - Prob. 1SQCh. 39 - Prob. 2SQCh. 39 - Prob. 3SQCh. 39 - A bird's keratin-lined _______ helps it grind up...Ch. 39 - Monosaccharides and amino acids absorbed from the...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Prob. 2DAACh. 39 - Prob. 3DAACh. 39 - Prob. 6SQCh. 39 - The low pH of the _______ aids in protein...
Ch. 39 - Prob. 8SQCh. 39 - Prob. 9SQCh. 39 - Eating a healthy diet entirely of plant foods...Ch. 39 - Prob. 11SQCh. 39 - _______ is (are) a good source of omega-3 fatty...Ch. 39 - Prob. 13SQCh. 39 - Match each substance with its description. __...Ch. 39 - Match each organ with its digestive function in...Ch. 39 - Some people who have gallstones experience pain...Ch. 39 - A python can survive by eating a large meal once...Ch. 39 - Although rabbits cannot break cellulose down into...
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- graph explores the relationship between the amount of surface area in the small intestine and the rate at which it absorbs food particles into the circulatory system. at villi height equal 1 , what is the explanation and indicate referencearrow_forwardWhich of the following statement is correct? a. disaccharides, glucose is the main source of energy for mammals b. hunger pangs are initiated by low high-density lipoprotein in the blood c. duodenum is the smallest part of the small intestine and is the main site for absorption d. it takes 4-6 hours for the bolus to be transported in the anal canalarrow_forwardAnswer these questions related to feeds and animal nutrition: a.What are the advantages of using extrusion versus pelleting? b.Explain two factors that affect the utilization of minerals.arrow_forward
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