Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
15th Edition
ISBN: 9781337408493
Author: STARR, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
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 why protein should be included in the diet.
What will happen to the human body if we are deficient in particular vitamins and trace elements? Give examples of effects of vitamin and mineral deficiencies.
There are 20 amino acids needed to make proteins in the animal body. Why aren't they all considered essential to animal diets?
Compare the incomplete and complete digestive systems.
What are the functions of accessory organs in a complete digestive system?
Explain how digestion is regulated in animals. What are the organ systems involved in regulation of digestion? Explain.
What are the health problems associated with nutrition and digestive system? Give atleast 3 examples with explanation
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
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Prob. 1SQCh. 39 - Prob. 2SQCh. 39 - Prob. 3SQCh. 39 - A bird's keratin-lined _______ helps it grind up...Ch. 39 - Prob. 5SQCh. 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 - Prob. 12SQCh. 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...Ch. 39 - Cholera is a disease caused by bacteria that make...
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- Sailors used to pack a few food items with a high caloric load to have the energy to survive the physically demanding deck work when crossing oceans. However, they felt weak after a few weeks at sea. What type of nutrients is likely missing?Do not be specific. Think of the big question, and write a short answer.arrow_forwardIf rats are limited to eating for one hour a day, what determines whether or not they will lose weight?arrow_forwardThe digestive system has several important functions. The physiological processes involved in the uitlisation of food happens in a specific order. Explain why digestion needs to happen before absorption. Make use of the macronutrient proteins as an example to explain your answer and to describe its digestion and absorption in detail.arrow_forward
- Choose is constructing a diagram of the digestive tract of cattle. Her diagram includes a rumen, which is a pouch-like extension of the esophagus. Which addition to the diagram would be most useful to model the function of the rumen in food digestion?arrow_forwardRegarding the graph(image), 1. Suggest a reason why the glucose concentration falls in both groups during the first hour. 2. Using information from the graphs, explain the changes in the blood glucose concentration in group Y after drinking the glucose. 3. Explain the difference in blood glucose concentration of group X compared with group Y. 4. Suggest what might happen to the blood glucose concentration of group X if they have no food over the next 24 hoursarrow_forward"Feeding cows grass is desirable because the grass helps maintain a more natural pH of the rumen, lessening the likelihood of ulcers and the need for antibiotics." True Falsearrow_forward
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