Campbell Biology, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134454665
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 41.3, Problem 2CC
Thinking about our nutritional needs and feeding behavior, propose an evolutionary explanation for why amylase, unlike other digestive enzymes, is secreted into the mouth.
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Do we have evidence that amylase can effectively digest starch in the mouth? Say yes or no. If yes, explain what the evidence is from this experiment. If no, explain what results in our experiment would have to be different to give us this evidence.
In the Alanine Cycle, different organs work together to produce glucose from protein. Which statement below best describes what happens in which organ?
a)In liver, pyruvate is transaminated to alanine; in the muscle, alanine is deaminated and pyruvate is used for ATP synthesis.
b)In muscle, pyruvate is transaminated to alanine; in the liver, alanine is deaminated and pyruvate is used for gluconeogenesis.
c)The liver exports glucose for use by the brain; in the muscle, alanine is deaminated by the urea cycle for use in ATP generation.
d)In muscle, pyruvate is transaminated to alanine; in the liver, alanine enters the urea cycle for excretion.
Using specific examples from your learning in biochemistry, explain how glucose breakdown, storage and synthesis occurs and how it is regulated in humans
Chapter 41 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 41.1 - An animal requires 20 amino acids to make...Ch. 41.1 - Prob. 2CCCh. 41.1 - WHAT IF? If a zoo animal eating ample food shows...Ch. 41.2 - Prob. 1CCCh. 41.2 - In what sense are nutrients from a recently...Ch. 41.2 - Prob. 3CCCh. 41.3 - Explain why a proton pump inhibitor, such as the...Ch. 41.3 - Thinking about our nutritional needs and feeding...Ch. 41.3 - Prob. 3CCCh. 41.4 - Prob. 1CC
Ch. 41.4 - What features of a mammal's digestive system make...Ch. 41.4 - WHAT IF? "Lactose-intolerant" people have a...Ch. 41.5 - Explain how people can become obese even if their...Ch. 41.5 - WHAT IF? Suppose you were studying two groups of...Ch. 41.5 - Prob. 3CCCh. 41 - Prob. 41.1CRCh. 41 - Propose an artificial diet that would eliminate...Ch. 41 - Prob. 41.3CRCh. 41 - How does human anatomy indicate that our primate...Ch. 41 - Prob. 41.5CRCh. 41 - Fat digestion yields fatty acids and glycerol....Ch. 41 - The mammalian trachea and esophagus both connect...Ch. 41 - Which of the following organs is incorrectly...Ch. 41 - Prob. 4TYUCh. 41 - Prob. 5TYUCh. 41 - After surgical removal of the gallbladder, a...Ch. 41 - If you were to jog 1 km a few hours after lunch,...Ch. 41 - DRAW IT Create a flowchart to summarize the events...Ch. 41 - EVOLUTION CONNECTION Lizards and snakes cannot...Ch. 41 - SCIENTIFIC INQUIRY In human populations of...Ch. 41 - WRITE ABOUT A THEME: ORGANIZATION Hair is largely...Ch. 41 - SYNTHESIZE YOUR KNOWLEDGE Hummingbirds are well...
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- See how I calculated ATP for glucose, follow that to calculate ATP for fructose. Remember, fructose ends up in acetyl coA but doesn't go through krebs cycle, instead gets tracked for fatty acid synthesis. therefore, We get low ATParrow_forwardYour digestive system uses a variety of enzymes to break down large food molecules into smaller ones that your cells can assimilate. A generic name for a digestive enzyme is hydrolase. What is the chemical basis for that name?arrow_forwardA recent study (Prasath, G.S. et al., 2014) found that strawberries contain a compound called fisetin which slows the release of glucose into blood during fasting. This slowing occurs whether the glucose is generated from glycogen hydrolysis or gluconeogenesis. Propose an enzyme that fisetin inhibits and defend your answer. How does the intacellular concentration of citrate affect fructose 1,6-bis phosphatase? [If you cannot remember, try to deduce it.] Describe how this fits into cellular physiology. Describe a situation in gluconeogenesis where having a cytoplasmic and mitochondrial isoenzyme that can catalyze the same reaction provides a benefit. Can the energy in consumed ethanol be stored in glycogen? Explain.arrow_forward
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- the graph shows the rate of reaction data for 2 different enzymes. one of these enzymes is found in the stomach, the other is found in the mouth.In 5 sentences explain which of these lines is more likely to indicate the enzyme found in the stomach.arrow_forwardWhen did some Africans gain the ability to process lactose? Describe how the evolutionary force of mutation changed the gene structure in these human populations, allowing adults to be able to process dairy.arrow_forwardSuppose you have a test tube containing olive oil and pancreatic lipase in a pH 7.0 buffer incubating at 37°C for 1 hour. a) Identify two different observations or measurements you can make in order to determine whether digestion of the oil occurred. b) Do you think digestion occurs under these conditions? What could have made digestion more efficient?arrow_forward
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