Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 47.5, Problem 2SB
What roles do symbiotic microorganisms play in digestion?
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Which of the following statements about the microbiota of the intestines is false?
1)The bacterial population in the small intestine is sparse compared to that of the colon
2)Aerobes outnumber anaerobes 100 to 1
3)Bacteria in the intestines aid in the digestion of food substances
4)None of these choices are false
In what ways are enteric bacteria important to our nutrition?
“Digestion”, alone, refers to the (very specific answer)
A) absorption of nutrients in the gut.
B) progressive dehydration of indigestible residue.
C) input of food into the digestive tract.
D) chemicall/mechanical breakdown of food.
E) mixing of nutrients with digestive enzymes.
Chapter 47 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 47.1 - Prob. 1SBCh. 47.1 - Prob. 2SBCh. 47.1 - What is the difference between deposit feeders and...Ch. 47.2 - Prob. 1SBCh. 47.2 - Prob. 2SBCh. 47.3 - Prob. 1SBCh. 47.3 - Prob. 2SBCh. 47.3 - Prob. 3SBCh. 47.3 - Prob. 4SBCh. 47.4 - Prob. 1SB
Ch. 47.4 - Prob. 2SBCh. 47.5 - How are the different types of teeth used in...Ch. 47.5 - What roles do symbiotic microorganisms play in...Ch. 47 - Prob. 1TYKCh. 47 - Prob. 2TYKCh. 47 - The order of successive steps in digestion is: a....Ch. 47 - Prob. 4TYKCh. 47 - Prob. 5TYKCh. 47 - Prob. 6TYKCh. 47 - If the fat in whole milk is ingested: a. the...Ch. 47 - The role of the liver in digestion is to: a....Ch. 47 - Prob. 9TYKCh. 47 - Prob. 10TYKCh. 47 - Prob. 11TYKCh. 47 - Prob. 12TYKCh. 47 - Prob. 13TYKCh. 47 - Prob. 14TYKCh. 47 - Apply Evolutionary Thinking What is the advantage...Ch. 47 - The human AMY-1 gene encodes salivary amylase, an...Ch. 47 - Prob. 2ITDCh. 47 - Prob. 3ITD
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- At which location in the gastrointestinal tract is the final digestion of lactose performed? a) Stomach O b) Duodenum O) Brush border d) Pancreasarrow_forwardWhy do bacteria cause diarrhea?arrow_forward1) How is most of the mass lost of the food we absorb into the internal environment? Group of answer choices a)Feces b)Urine c)Carbon dioxide d)Water e)Peptides f)Fiber 2) True/False: Trypsin and chymotripsin levels would be at normal levels in the lumen of the small intestine.arrow_forward
- Which bacteria in the Family Enterobacteriaceae are true entericpathogens and which ones are opportunists?arrow_forward27. Which statement/s does not happen in the large intestine? A) waste products pass through until they form solid feces B) absorption of water and salts C) production of vitamin K by the microorganism present D) digestion by intestinal enzymes 28. The organ where food doesn't pass through but it does break down fats and detoxify poisons? A) Pancreas B) Liver C) Salivary gland D) Esophagus E) Tracheaarrow_forwardWhy does not the stomach break itself down? a) The stomach wall does not consist of protein so it is not affected by proteolytic enzymes b) The epithelial cells form a protective layer c) The breakdown enzymes are not strong enough to break down the stomach wall d) The stomach wall is protected by mucusarrow_forward
- Doesn’t E. coli cause intestinal problems?arrow_forwardHypothetically speaking, what would this graph suggest about the cause of ulcers? Assume Group 1 is antacid treatment and Group 2 is a placebo. # Ulcers/ patient Group 1 Treatment Group a) Antibiotics prevent ulcers b) Bacteria cause excess acid Group 2 Oc) The excess acid theory is correct d) The excess acid theory is incorrectarrow_forwardlndications for parenteral nutrition include the following except() A) Gut is cancerous B) Gut is absolutely obstructed C) Gut is too short D) Gut is fistulated E) Gut is inflamedarrow_forward
- Which of the following words is missing in the following sentence: Histamine stimulates ___________________ cells that release _______________ a) parietal-; intrinsic factor b) parietal-; hydrochloric acid c) cup-; mukus d) parietal-; pepsinogen e) nack-; mukusarrow_forwardHypothetically speaking, what would this graph suggest about the cause of ulcers? Assume Con is a placebo and Exptl is an antibiotic treatment. a) The excess acid theory is correct b) Antibiotics reduce acid production c) Bacteria likely cause ulcers d) Antibiotics do not impact ulcersarrow_forwardBlockage of the bile duct would be expected to affect Multiple Choice a) cellulose digestion. b) protein digestion. c) carbohydrate digestion. d) lipid digestion. e) nucleotide digestion.arrow_forward
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Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License