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 8MC
Summary Introduction
Introduction:
Cooked food is easier to digest than raw food.
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How is the digestion of fats different from that of proteins and carbohydrates?
a. Fat digestion occurs in the small intestine, and the digestion of proteins and carbohydrates occurs in the stomach.
b. Fats are absorbed into cells as fatty acids and monoglycerides but are then modified for absorption; amino acids and glucose are not modified further.
c. Fats enter the hepatic portal circulation, but digested proteins and carbohydrates enter the lymphatic system.
d. Digested fats are absorbed in the large intestine, and digested proteins and carbohydrates are absorbed in the small intestine.
Which statement is not true?
A. most people in the world cannot digest milk sugar as adults
B.rabbits eat their first feces to reprocess it
C. ceca are pouches that come off of the duodenum to create extra bile in animals that eat lots of fat
D. some mammals can digest molecules that humans cannot (eg. certain sugars found in insects)
E. the crop is used for storage like bees storing nectar that becomes honey
Why would it be bad for animals to store lots of glycogen?
A. it is difficult to hold inside cells because it is hydrophobic (it diffuses out)
B. it reacts with water to create acids
C. it causes blood sugar to be too high
D. it is hydrophilic attracting lots of water weight/mass
What do the enzymes pepsin, chymotrypsin, trypsin, and carboxypeptidase have in common?a. They are secreted and active within the stomach.b. They are pancreatic enzymes.c. They are secreted and active within the small intestine.d. They are enzymes that participate in protein digestion
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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- From the moment you start to eat an apple, different organs in the body work together to complete the process of digestion. What is the advantage of having multiple organs in the process of digestion? A. The process is more energy-efficient, and organs can perform more than one function simultaneously B. Different systems can compensate for another if the responsible system fails C. Different organs act independently as a transportation system until digestion is complete D. Each organ has a specific function and is specialized to allow the body to supply the correct nutrientsarrow_forwardWhat anatomical feature in digestive cells allows more digestion? a. Goblet cells b. More nerve endings c. More blood supply d. Microvilliarrow_forwardHow is digestion regulated?a. Digestion is regulated by the autonomic nervous system.b. Digestion is slowed by the parasympathetic nervous system.c. Digestion is increased by the sympathetic nervous system.d. Digestion is stimulated by the parasympathetic fibers of the vagus nerve.e. Sympathetic neurons cause blood to be diverted from digestive organs.arrow_forward
- How does age affect digestion? A. Slows swallowing B. Overgrowth of bacteria reduces the amount of nutrients the intestines absorb C. Reduces stomach secretions D. All of the abovearrow_forwardThe primary function of the large intestine is to concentrate wastes into solid form (feces) for release from the body. How does it accomplish this? a. By adding additional cells from the mucosal layer b. By absorbing water c. By releasing salt d. All of these are methods used by the large intestine.arrow_forwardWhich of the following best describe the function of goblet cells in the digestive tract? A. produce mucus that protects parts of the digestive organs from the effects of powerful enzymes needed for food digestion B. secrete buffers in order to keep the pH of the digestive tract close to neutral C. provide protection against invading bacteria and other disease-causing organisms that enter the digestive tract in food D. absorb nutrients from digested food and store them for future usearrow_forward
- After digested nutrients go from the intestines into the blood, where does that nutrient-rich blood go next? A. to the liver B. directly to the heart C. to the brain D. scattered throughout the bodyarrow_forwardFigure 16.7 Which of the following statements about the digestive system is false?a. Chyme is a mixture of food and digestive juices that is produced in the stomach.b. Food enters the large intestine before the small intestine.c. In the small intestine, chyme mixes with bile, which emulsifies fats.d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forwardHow are nutrients absorbed?a. Monosaccharides are absorbed into the epithelial cells of villi through facilitated diffusion.b. Fatty acids and glycerol are absorbed by diffusion into the villi and are then exocytosed to lacteals.c. Amino acids are absorbed into capillaries in the villi.d. Fat-soluble vitamins are absorbed with fatty acids and glycerol.e. Water-soluble vitamins are absorbed through simple diffusion except for vitamin B 12 , which must beendocytosedarrow_forward
- The diagram shows the Inside of the small intesine. Which sentence correctly describes the function of the structures shown? A. The pancreas produces an Important chemical. O B. The large intestine absorbs water and excretes waste. O C. The vill absorb nutrients. D. The stomach breaks down food.arrow_forwardWhich two hormones promote the release of bile and pancreatic juice into the small intestine? A. Secretin and cholesytokinin (CCK) B. Gastric inhibitory peptide (GIP) and histamine C. Somatostatin and secretin D. Gastrin and histamine Which of the following statements about starch digestion is FALSE? A. It begins in the mouth. B. It occurs in the stomach. C. It requires the action of pancreatic amylase D. It requires brush border enzymes for completion. . Which of the following statements about contraction of intestinal smooth muscle is TRUE? A. It occurs automatically. It is increased by parasympathetic nerve stimulation C. It produces segmentation D. All of the above are TRUE В.arrow_forwardWhat is the function of Bile? A. Transport of lipids across the intestinal walls B. Emulsification of lipids in the digestive tract. C. Attaches proteins to lipids to promote water solubility.arrow_forward
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