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Concept explainers
Interpretation:
The reason for creatine phosphate as a better source of quick energy for a runner than either glucose or glycogen has to be explained.
Concept Introduction:
Starvation: This is severe deficiency in caloric energy intake below the level needed to maintain an organism in our life.
Catabolism: This is part of the
Metabolism: This process refers to biochemical process that occur any living organism including humans to maintain life.
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Chapter 22 Solutions
Fundamentals of General, Organic, and Biological Chemistry, Books a la Carte Edition; Modified Mastering Chemistry with Pearson eText -- ValuePack ... and Biological Chemistry (4th Edition)
- If fatty acids are a more efficient storehouse of energy than glucose or glycogen, why aren't they used immediately to drive muscle contraction?arrow_forwardDuring the initial phase of exercise, muscles can become hypoxic which leads to the buildup of lactate. a) Fully explain how oxygen shortage can lead to the accumulation of lactate in the muscles. b) Describe how lactate (often seen as a waste product) can produce glucose via gluconeogenesis.arrow_forwardSome weight lifters like to consume various products containing creatine phosphate. Why would this be useful? Why would weight lifters benefit more than marathon runners from creatine phosphate?arrow_forward
- What is the role of lactic acid? It is converted to pyruvic acid through glycolysis. It is a potentially toxic by-product of high-intensity exercise. It aids the aerobic production of ATP. It plays a critical role in supplying fuel to the working muscles, heart, and resting tissues.arrow_forwardMarathon runners often practice "carb loading" prior to a race. The purpose of this practice is to increase the stores of energy available for muscles to use. Explain how energy is used by muscle fibers and how this practice of "card loading" benefits the runner's muscles. Be sure to use the terms glucose, glycogen, creatine, phosphate, and ATP in the explanation.arrow_forwardMarathon runners derive most of their energy through which mode of ATP production? creatine phosphate anaerobic glycolysis aerobic respiration Ohypertrophyarrow_forward
- How long does a person have to jog to offset the calories obtained from eating 10 macadamia nuts (75 kJ, or 18 kcal, per nut)?arrow_forwardOne consequence of starvation is a reduction in muscle mass. What happens to the muscle proteins?arrow_forwardDiscuss briefly (in less than 100 words) the practice of carbohydrate loading for endurance in aerobic exercise. What is the role of glycogen metabolism (glycogenesis and glycogenolysis) and glycolysis in carbohydrate loading? Why is this practice more productive than usual without carbohydrate loading?arrow_forward
- What would be the ATP yield per molecule of glucose in the muscle if glycogen were the source of the glucose?arrow_forwardtrue/false: The carbon skeleton produced by catabolism of asparagine enters glycolysis as oxaloacetate.arrow_forwardwhich of the following is not true for a muscle that is forced to metabolize glucose anaerobically ? - The cells breakdown glucose faster - The cells produce less ATP per mole of glucose - The cells metabolize glucose to lactate - The activity of the cytosolic gycerol-3-phosphate dehydrogenase will be required for the muscle to sustain glycolysis - The muscle quickly experiences fatigue if it is deficient in the enzyme lactate dehydrogenasearrow_forward
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