Muscle glycogen stores would be broken down during an exercise bout lasting several hours because ________. A. exercising muscle can only utilize glucose for energy for long-term exercise B. glycogen can enter the mitochondria and produce more ATP than glucose C.exercising muscle utilizes both glucose and free fatty acids for energy during long-term exercise D. exercising muscle needs the fatty acids released from glycogen for energy

Muscle glycogen stores would be broken down during an exercise bout lasting several hours because ________. A. exercising muscle can only utilize glucose for energy for long-term exercise B. glycogen can enter the mitochondria and produce more ATP than glucose C.exercising muscle utilizes both glucose and free fatty acids for energy during long-term exercise D. exercising muscle needs the fatty acids released from glycogen for energy

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 muscle, glycogen phosphorylase is stimulated (activated) by a. Glucose b. AMP c. Glucose 6-phosphate d. ATP
With glycogen storage disease type V, the enzyme ______________ is defective or absent. a. Glycogenolase b. Amylase c. Glucose-1-phosphatase d. Myophosphorylase e. Glycogenase
Humans have evolved to utilize ketone bodies as a partial replacement for glucose during times of starvation before moving toward muscle protein as an energy source. This is beneficial because __________. a. muscle proteins cannot be converted to glucose b. preserving muscle protein invloves the chance of retaining strenght and physical capacity
Which of the following would contribute to “glycogen sparing/preservation” during prolonged exercise? a. Dietary consumption of glucose during the exercise bout b. Cori cycle c. An increase in the number of mitochondria in the skeletal muscle d. All of the above e. Only B and C are correct
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
Which of the following is true?a. Triglycerides have the least energy content per gram of the three majorenergy sources in the body.b. Fat catabolism generates new triglycerides for storage in adipose tissue.c. By mass, the total-body content of carbohydrates exceeds that of total triglycerides.d. Catabolism of fatty acids occurs in two-carbon steps.e. Triglycerides are the major lipids found in plasma membranes
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
ATP for muscle contraction can be provided by ______. a. aerobic respiration b. lactate fermentation c. transfer of a phosphate from creatine phosphate d. all of the above
If glucose was no longer available, pyruvate processing activity would: a. decrease b. increase c. remain the same
When there is no enough CTP that binds with aspartate transcarboxylase, the mechanism that takes place is; c. Positive feedback mechanism d. Negative feedback mechanism a. Homeostasis b. 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.
1. Insulin.....a. Carries glucose into the muscle cellb. signals the muscle cell to take up glucose c. signals the synthesis of glucose in the liver d. carries lactate from the muscle to the liver 2.In the fasting, state, the Liver helps maintain a normal level of blood glucose by: a. Making ketones and storing them for later.b. stopping glycolysis and using alternative fuels for energyc. speeding up glycolysis because it needs energy to make glucose d. Beginning glycogenesis to build up glucose storage