Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. Stored ATP and creatine phosphate are immediate energy sources for muscle fibers. b. Glycolytic catabolism occurs in the mitochondria and requires oxygen. c. Glycolytic catabolism provides enough ATP to fuel from several minutes to a few hours of activity. d. Oxidative catabolism may oxidize the products of glycolysis, fatty acids, and amino acids

Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. Stored ATP and creatine phosphate are immediate energy sources for muscle fibers. b. Glycolytic catabolism occurs in the mitochondria and requires oxygen. c. Glycolytic catabolism provides enough ATP to fuel from several minutes to a few hours of activity. d. Oxidative catabolism may oxidize the products of glycolysis, fatty acids, and amino acids

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter32: Structural Support And Movement

Section: Chapter Questions

Problem 10SA: ATP for muscle contraction can be provided by ______. a. aerobic respiration b. lactate fermentation...

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In the presence of high ratio of NADH/NAD in a muscle cell glucose will continue towards which metabolic pathway: a. Formation of lactic acid b. Formation of acetyl CoA c. Storage of glycogen d. Production of 34 ATP + H20 and CO2 e. Krebs cycle
The “glycolytic” white fibers in Human Skeletal Muscle: a. lack myosin b. are used for rapid contraction “burst” exercise c. oxidize glucose to pyruvate and then release lactic acid into the bloodstream d. produce ketone bodies e. produce ethanol
The energy for muscle contraction is most directly obtained from a.phosphocreatine. b.ATP. c.anaerobic respiration. d.aerobic respiration.
Which of the following statements is (are) accurate about aerobic and anaerobic respiration?a. Aerobic respiration is best for sprints.b. Anaerobic respiration is best for long distances because it does not need large amounts of oxygen.c. Aerobic respiration is faster.d. Aerobic respiration produces more energy per glucose molecule.e. Both aerobic respiration and anaerobic respiration start with glycolysis.
Marathon 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.
Which of the following is NOT a stock form of the key molecules for energy generation in muscle? A. Creatine phosphate B. Hemoglobin C. Glycogen D. Myoglobin
Muscle soreness and fatigue in a racehorse after a long, strenuous race is a result of in the muscle. A. anaerobic metabolism, which leads to lactic acid buildup B. aerobic metabolism, which leads to buildup of carbon dioxide C. aerobic metabolism, which leads to lactic acid deficiency D. anaerobic metabolism, which leads to ATP buildup
Which of the following is a valid statement about lactate? a. Is responsible for the burning sensation in the muscles during exercise b. Primarily produced as a result of insufficient oxygen availability in the cell c. Causes DOMS after rigorous exercise d. “Metabolic waste product” produced during exercise e. Ice massage should be employed after exercise to flush lactate out of the skeletal muscle after exercise f. None of the above are true g. Both A and B are true
A fatigued muscle lacks sufficient oxygen for the aerobic respiration to supply needed ATP. The accumulation of Select one: a. acetic acid occurs and contractions occur with less strength b. lactic acid (lactate) occurs and muscle cramps may set in c. pyruvate occurs and muscle cramps set in d. ethyl alcohol occurs and less frequent contractions occur
Trace the fate of hydrogens removed from glucose during glycolysis when oxygen is present in muscle cells; compare this to the fate of hydrogens removed from glucose when the amount of available oxygen is insufficient to support aerobic respiration.
Name the primary sources of ATP for:a. Immediate energy for a few secondsb. Energy extending to about 15 secondsc. Energy for up to 1 minute.d. Energy extending for around an hour of exercise and beyond.
Muscle contraction is the result of critical steps characterized by conformational changes to protein structures in the supramolecule. Which of the following conformational changes requires energy, i.e. ATP hydrolysis? A. Binding of calcium to tropomyosin changing its conformation and exposing a binding site in troponin B. Binding of myosin to troponin resulting in the power stroke and cross-bridge cycle of muscle contraction. C. Disruption in the binding of the myosin head to troponin preceding its release and relaxation back to its activated form. D. Binding of ATP to the myosin head bound to troponin.