Exam 10 (Energy Metabolism)

_________ is the energy currency of the body. A. ATP B. DTP C. NADH D. phosphate

A. ATP

Which of the following statements regarding the main fuel of the lactic acid system is false: A. Glycogen is the circulating form of carbohydrate in the body. B. The main fuel source is carbohydrate C. Carbohydrate is the primary energy fuel for the brain D. Carbohydrates are the primary dietary sources of glucose. E. Glycogen consists of hundreds of glucose molecules linked together.

A. Glycogen is the circulating form of carbohydrate in the body.

Which energy system predominates during a set of 15 reps of weight training (45 seconds)? A. Glycolysis B. Oxidative phosphorylation C. Phosphagen

A. Glycolysis

Which energy system produces a medium amount of energy over a medium period of time? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

A. Lactic Acid System

Which is an example of the High Energy Phosphate system? A. Powerlifting B. 800-m run C. Marathon

A. Powerlifting

Which is an example of the Lactic Acid system? A. Powerlifting B. 800-m run C. Marathon

B. 800-m run

What is the fuel for glycolysis? A. Fat B. Carbohydrate C. Protein D. Adenosine Triphosphate

B. Carbohydrate

Which energy system involves glycogen breakdown into pyruvate and ATP? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

B. High Energy Phosphate System

Which energy system produces a large amount of energy over a short period of time? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

B. High Energy Phosphate System

Which energy system uses CP and ATP as the energy fuel? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

B. High Energy Phosphate System

Which of the following statements regarding the oxygen system is false: A. Exercise performed at an intensity below the anaerobic threshold relies exclusively on the aerobic system. B. The use of this system results in high blood lactate levels. C. Energy fuel used by this system includes pyruvic acid D. "As the duration of the activity increases, the relative contribution of this system to the total energy requirement increases" E. none are correct

B. The use of this system results in high blood lactate levels.

The high energy phosphate system: A. uses high energy phosphate groups including creatine and ADP B. is limited by the small muscle stores of high energy phosphate groups C. is required for low-intensity muscle activity that is done over a short time interval D. produces energy at a very slow rate E. none are correct

B. is limited by the small muscle stores of high energy phosphate groups

"Handling lactic acid refers to the bodys ability to:" A. slow down muscle glycolysis B. remove lactic acid from the muscles C. use more oxygen D. produce lactic acid in the muscles

B. remove lactic acid from the muscles

Which of the following statements regarding the lactic acid system is false: A. Energy production occurs in the absence of oxygen B. It involves a step-wise breakdown of glycogen and/or blood glucose into pyruvic acid and ATP C. A specific enzyme is involved in the breakdown of glycogen or glucose in the presence of oxygen D. Lactic acid is produced when the rate of work is high E. Energy production is limited by lactic acid accumulation

C. A specific enzyme is involved in the breakdown of glycogen or glucose in the presence of oxygen

Which is an example of the Oxygen system A. Powerlifting B. 800-m run C. Marathon

C. Marathon

Which energy system involves breakdown of fuels in the presence of 02 to produce large amounts of ATP? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

C. Oxygen System

Which energy system produces a large amount of energy over a long period of time? A. Lactic Acid System B. High Energy Phosphate System C. Oxygen System

C. Oxygen System

Which of the following statements regarding the effects of training on the oxygen system is false: A. Endurance exercise is the most effective method of training B. Older individuals adapt their aerobic system more slowly than younger people C. "Training should include repeated, sustained efforts of long duration several times per week." D. Genetics does not play a significant role in determining the rate of adaptation

D. Genetics does not play a significant role in determining the rate of adaptation

Which of the following statements regarding ATP is true: A. ATP muscle stores are high enough to maintain muscular activity for long durations B. The amount of energy generated by the breakdown of ATP into ADP is 90-100 kcal C. ATP cannot be regenerated in the human body D. The ATP for muscular contraction is needed for the formation of cross bridges E. The process of ATP regeneration is extremely slow.

D. The ATP for muscular contraction is needed for the formation of cross bridges

Which of the following statements regarding the energy systems is true A. Aerobic and anaerobic distinction is made depending on whether carbon dioxide is produced in the production of energy B. Two anaerobic systems can be separated on the basis of whether or not pyruvic acid is produced. C. The production of ATP involves two energy systems D. The energy systems differ from each other with respect to the rate and the duration of energy production E. Lactic acid is produced during energy production by the high energy phosphate system

D. The energy systems differ from each other with respect to the rate and the duration of energy production

Which of the following statements regarding the chemistry of energy production is false A. ATP provides energy for all biochemical processes B. Energy is liberated when the chemical bond between ATP and its phosphate subgroup is formed C. The end product of the breakdown of complex nutrients is ATP D. Hydrosynthesis describes the chemical reaction during which energy is generated. E. b and d

E. b and d

VO2 max: A. is most often expressed in L/min B. is determined by measuring the maximal volume of oxygen that can be consumed in a given amount of time during submaximal effort C. is lower in trained individuals than in nontrained individuals D. is used to evaluate the power of the anaerobic system E. none are correct

E. none are correct

Which of the following factors does not contribute to a high aerobic power: A. a high level of blood glucose B. a high arterial oxygen content C. a larger tissue oxygen extraction D. an increased amount of blood that the heart can pump E. none are correct

E. none are correct

The major characteristics of the oxygen system include: A. high ATP production B. fast ATP production C. ability to remove lactic acid D. all are correct E. none are correct F. a and c

F. a and c

The abbreviation used to describe maximum aerobic power is MAP. True or False?

False

The exercise intensity at which lactic acid begins to accumulate within the blood is known as the aerobic threshold. True or False?

False

The high energy phosphate system is also known as the anaerobic lactic system True or False?

False

The process of forming glycogen from glucose is termed glycolysis. True or False?

False

The rate of lactic acid production can be decreased by increasing the intensity of the activity and by increasing the effectiveness of the anaerobic system. True or False?

False

"A kilocalorie is the amount of energy needed to raise 1,000 grams of water by 1 degree Celsius. " True or False?

True

Anaerobic threshold is the point during exercise when you begin to feel discomfort and a burning sensation in the muscles. True or False?

True

Endurance training increases the number and size of mitochondria within the muscle fibers True or False?

True

Fats are an important energy source for athletic events that require large outputs of energy over a long period of time as they provide nearly limitless energy supplies to the human body. True or False?

True

Fats cannot be broken down anaerobically True or False?

True

The resynthesis of ATP by the aerobic system takes place in cell organelles called mitochondria. True or False?

True