Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 5, Problem 27RA
People who are starving have very thin arms and legs. Because they're not eating, no glucose is coming in from the gastrointestinal tract, yet the brain must still be getting glucose from the blood to keep them alive. Explain the relationship between these observations, and the particular
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Chapter 5 Solutions
Human Physiology
Ch. 5 - Define the term glycolysis in terms of its initial...Ch. 5 - What are the initial substrates and final products...Ch. 5 - Describe the physiological functions of lactic...Ch. 5 - Compare the fate of pyruvate in aerobic and...Ch. 5 - Draw a simplified citric acid cycle and indicate...Ch. 5 - Explain how NADH and FADH2 contribute to oxidative...Ch. 5 - Explain how ATP is produced in oxidative...Ch. 5 - Describe glycogenesis and glycogenolysis, and...Ch. 5 - Explain the significance of gluconeogenesis and...Ch. 5 - Prob. 6aCP
Ch. 5 - Prob. 6bCPCh. 5 - Describe transamination and deamination and...Ch. 5 - List five blood-borne energy carriers and explain,...Ch. 5 - Prob. 1RACh. 5 - In anaerobic metabolism, the oxidizing agent for...Ch. 5 - When skeletal muscles lack sufficient oxygen,...Ch. 5 - The conversion of lactic acid to pyruvic acid...Ch. 5 - Which of these statements about the oxygen in the...Ch. 5 - In terms of the number of ATP molecules directly...Ch. 5 - Ketone bodies are derived from
Ch. 5 - Prob. 8RACh. 5 - The conversion of glucose 6-phosphate to free...Ch. 5 - The formation of glucose from pyruvic acid derived...Ch. 5 - Which of these organs has an almost absolute...Ch. 5 - When amino acids are used as an energy source,
Ch. 5 - Intermediates formed during fatty acid metabolism...Ch. 5 - State the advantages and disadvantages of the...Ch. 5 - What purpose is served by the formation of lactic...Ch. 5 - Describe the effect of cyanide on oxidative...Ch. 5 - Describe the metabolic pathway by which glucose...Ch. 5 - Prob. 18RACh. 5 - Explain how energy is obtained from the metabolism...Ch. 5 - Prob. 20RACh. 5 - Why is the production of lactic acid termed a...Ch. 5 - Prob. 22RACh. 5 - What three molecules serve as the major substrates...Ch. 5 - A friend, wanting to lose weight, eliminates all...Ch. 5 - Suppose a drug is developed that promotes the...Ch. 5 - For many years, the total number of molecules of...Ch. 5 - People who are starving have very thin arms and...Ch. 5 - Prob. 28RACh. 5 - Prob. 29RACh. 5 - Prob. 30RACh. 5 - Prob. 31RACh. 5 - Prob. 32RACh. 5 - Prob. 33RA
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- Fatty acids are stored in adipose tissue, as triacylglycerol (TAG) forms. TAGs are degraded as glycerol and fatty acids where energy is required. Based on that knowledge explain: How these products are used in the adipose, liver, and other tissue? Why glycerol can not be metabolized in adipose tissue?arrow_forwardIn a state of starvation, several changes happen within our bodies. Discuss these metabolic changes?arrow_forwardExperienced runners know that it is poor practice to ingest very large amounts of glucose/sucrose immediately prior to a running long-distance race (marathon). What is the metabolic basis of this idea?arrow_forward
- Arrange the following pathways in order of their occurrence as source of energy for the body during fasting and starvation: 1. glycogenolysis 2. lipid catabolism 3. gluconeogenesis 4. ketogenesisarrow_forwardIndicate the following where the tissue(s) for the metabolic pathway takes place: Glycogenesis Lipogenesis Glycogenolysis Lipolysis Gluconeogenesisarrow_forwardIn adipose tissue, the pentose phosphate pathway is quite active. Why? With the use of an example, explain how this route aids lipogenesis (such as a person eating chocolate).arrow_forward
- Can you explain the difference in the regulation of carbohydrate metabolism in liver and muscle?arrow_forwardIn the table below, choose the appropriate metabolic processes for each scenario: Metabolic Processes Process that Occurs in RBCs Process that Occurs Only in Liver Glycolysis A A Gluconeogenesis B B Beta Oxidation C C Ketogenesis D D Ketolysis E E Urea Formation F F Glyconeogenesis G Garrow_forwardA high-sucrose diet is said to increase the risk of non-alcoholic fatty liver disease. Explain?arrow_forward
- List three differences between fatty acid synthesis and β-oxidation.arrow_forwardLactose intolerance is caused by reduced production of the enzyme lactase. A variety of digestive system problems, such as celiac disease and Crohn’s disease) can also lower the production of lactase. If an individual produces low levels of the enzyme lactase, explain why they might be able to tolerate eating dairy products that contain lower levels of lactose (e.g., hard cheeses, feta cheese, and cottage cheese), but will not be able to tolerate foods with high levels of lactose (e.g., milk).arrow_forwardDraw the integrated metabolic pathway during fed state. You must include three metabolic pathways that occur during a fed state: Glycolysis TCA cycle Triglyceride synthesis The three pathways must be linked. Add the following vitamins to the integrated pathways Vitamin B1: use at least 2 times Vitamin B2: use at least 2 times Vitamin B3: use at least 4 times Vitamin B5: use at least 2 timesarrow_forward
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