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Lifetime Physical Fitness & Wellness

Lifetime Physical Fitness & Wellness

15th Edition

ISBN:9781337677509

Author:HOEGER

Publisher:HOEGER

Chapter10: Preventing Cardiovascular Disease

Section: Chapter Questions

Problem 3AYK

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Muscle does not provide glucose for the brain during times of starvation. Why? You may choose more than one answer.
Muscle lacks sufficient glucose stores.
Muscle uses the glucose for movement to go find food.
Liver provides glucose for brain
Glucagon prevents the secretion of glucose
Muscle lacks the enzymes necessary to produce free glucose

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which 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 dehydrogenase
Which of the following statements is correct? O The brain prefers glucose as an energy source, but can use ketone bodies O Muscle cannot use fatty acids as an energy source O In a well-fed human, approximately equal amounts of energy are stored as glycogen and as triacylglycerol O Fatty acids cannot be used as an energy source in humans because humans lack the enzymes of the glyoxylate cycle Amino acids are a preferable energy source over fatty acids Search Si
Muscle glycogen provides glucose to all local muscle fibers O can be mobilized to provide glucose to the bloodstream stores are similar in size to liver glycogen stores O provides glucose only to the cells that store it
Which of the following statements best describes the absorption of glucose? Absorption of glucose requires digestion by aminopeptidases on absorptive epithelial microvilli before absorption of the carbohydrate smaller units such as glucose. Absorption of glucose requires an electrochemical gradient of high extracellular K+ set up by primary active transport. Absorption of glucose occurs at villi and crypts mainly in the duodenum where amylases break down carbohydrates into glucose. Absorption of glucose occurs at the transporting epithelia in the small intestine and is a secondary active transport that requires a Na+gradient
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Which of the following statements is false? protein catabolism is the building of new protein anabolic steroids help build muscle tissue. anabolic processes build new protein catabolic steroids help breakdown muscle O protein catabolism is the breakdown of protein
Which of the following is least likely to contribute to reduced fat oxidation at high intensities? Group of answer choices pick one only Inhibited lipolysis Increased lactic acid production. Inhibited FA transport into the muscle. Inhibited FA transport into the mitochondria
When your muscles suddenly need a lot of ATP quickly; for example, if you decide to lift a couch over your head; what nutrient will provide most of the ATP for the first couple of minutes? O glucose carnitine O fatty acids O acetyl coA O vitamin B6
Which of the following enzymes CANNOT be found in the skeletal muscle? Glucose-6-phosphatase Glycogen synthase Glycogen phosphorylase Adenylyl cyclase Hexokinase
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In order to use lipids to produce ATP the first step is beta oxidation of fatty acids which occurs in the cytoplasm of the cell TRUE or FALSE If glucose stores are getting low, non-carbohydrate molecules such as lipids and proteins will be used to make ATP. This is referred to as glucose sparing TRUE or FALSE Our dietary source of carbohydrates comes predominantly from plants. TRUE or FALSE Essential nutrients can be produced in the liver by the interconversion of different macromolecules in the liver. TRUE or FALSE The major lipid in the american diet is triglycerides. TRUE or FALSE All proteins from animal products are complete proteins. TRUE or FALSE

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