Question 1

One of the principal means by which the kidneys regulate acid-base balance is by increasing or decreasing the bicarbonate concentration of the blood.

Accepted Answer

A) True 
 B)False

Question 2

Which of the extracellular buffers contributes the most to the cell's buffering capacity?

Accepted Answer

A) bicarbonate 
B) hemoglobin 
C) extracellular proteins 
D) all of the above contribute equally 
A) bicarbonate 
B) hemoglobin 
C) extracellular proteins 
D) all of the above contribute equally

Question 3

According to the Henderson-Hasselbalch equation,the pH of a weak acid solution is determined by

Accepted Answer

A) ratio of the concentration of the acid in solution to the concentration of the base 
B) ratio of the concentration of the base in solution to the concentration of the acid 
C) the dissociation constant of bicarbonate 
D) All of the above answers are correct 
A) ratio of the concentration of the acid in solution to the concentration of the base 
B) ratio of the concentration of the base in solution to the concentration of the acid 
C) the dissociation constant of bicarbonate 
D) All of the above answers are correct

Question 4

Which of the following statements about a buffer is correct?

Accepted Answer

A) a buffer resists pH change 
B) a buffer removes hydrogen ions from solution 
C) buffers often consist of a weak acid and its conjugate base 
D) All of the above answers are correct 
A) a buffer resists pH change 
B) a buffer removes hydrogen ions from solution 
C) buffers often consist of a weak acid and its conjugate base 
D) All of the above answers are correct

Question 5

The principal buffer against acidosis during exercise is intracellular phosphate groups.

Accepted Answer

A) True 
 B)False

Question 6

An increase in the hydrogen ion concentration in contracting skeletal muscle can impair performance by hydrogen ions competing with calcium ions for binding sites on troponin.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following events occurs during exercise at work rates above 60-80% VO2 max?

Accepted Answer

A) a decrease in plasma bicarbonate concentration 
B) an increase in blood lactic acid concentration 
C) a decrease in blood pH 
D) All of the above answers are correct 
A) a decrease in plasma bicarbonate concentration 
B) an increase in blood lactic acid concentration 
C) a decrease in blood pH 
D) All of the above answers are correct

Question 8

Which of the following events are not primary sources of hydrogen ions during rigorous exercise?

Accepted Answer

A) ATP breakdown and release of hydrogen ions 
B) Increased production of lactic acid 
C) Aerobic metabolism of glucose resulting in the production of carbonic acid 
D) anaerobic production of 3-phosphoglucose during glycolysis 
A) ATP breakdown and release of hydrogen ions 
B) Increased production of lactic acid 
C) Aerobic metabolism of glucose resulting in the production of carbonic acid 
D) anaerobic production of 3-phosphoglucose during glycolysis

Question 9

Repeated bouts of high intensity exercise (e.g. ,interval training)can reduce arterial pH to levels as low as

Accepted Answer

A) 7.3 
B) 7.2 
C) 7.1 
D) None of the above answers are correct 
A) 7.3 
B) 7.2 
C) 7.1 
D) None of the above answers are correct

Question 10

Acidosis can occur due to

Accepted Answer

A) a decrease in the H+ concentration. 
B) a loss of acids from the blood. 
C) an accumulation of bases in the blood. 
D) none of the above. 
A) a decrease in the H+ concentration. 
B) a loss of acids from the blood. 
C) an accumulation of bases in the blood. 
D) none of the above.

One of the principal means by which the kidneys regulate acid-base balance is by increasing or decreasing the bicarbonate concentration of the blood.

Which of the extracellular buffers contributes the most to the cell's buffering capacity?

According to the Henderson-Hasselbalch equation,the pH of a weak acid solution is determined by

Which of the following statements about a buffer is correct?

The principal buffer against acidosis during exercise is intracellular phosphate groups.

An increase in the hydrogen ion concentration in contracting skeletal muscle can impair performance by hydrogen ions competing with calcium ions for binding sites on troponin.

Which of the following events occurs during exercise at work rates above 60-80% VO₂ max?

Which of the following events are not primary sources of hydrogen ions during rigorous exercise?

Repeated bouts of high intensity exercise (e.g. ,interval training)can reduce arterial pH to levels as low as

Acidosis can occur due to

Introduction to Exercise Physiology

A: Common Measurements in Exercise Physiology

B: Common Measurements in Exercise Physiology

Control of the Internal Environment

Bioenergetics

Exercise Metabolism

Cell Signaling and Hormonal Response to Exercise

Exercise and the Immune System

The Nervous System: Structure and Control of Movement

Skeletal Muscle: Structure and Function

Circulatory Responses to Exercise

Respiration During Exercise

Temperature Regulation

Physiology of Training: Effect on Vo2 Max, Performance, and Strength

Preventing Chronic Disease: Physical Activity and Healthy Eating

Work Tests to Evaluate Cardiorespiratory Fitness

Exercise Prescriptions for Health and Fitness

Exercise Prescriptions for Health and Fitness

Nutrition and Body Composition for Health

Factors Affecting Performance

Laboratory Assessment of Human Performance

Training for Performance

Training for the Female Athlete, Children, Special Populations, and the Masters Athlete

Nutrition, Body Composition, and Performance

Exercise and the Environment

Ergogenic Aids

Filters

Exam 12: Acid-Base Balance

One of the principal means by which the kidneys regulate acid-base balance is by increasing or decreasing the bicarbonate concentration of the blood.

Which of the extracellular buffers contributes the most to the cell's buffering capacity?

According to the Henderson-Hasselbalch equation,the pH of a weak acid solution is determined by

Which of the following statements about a buffer is correct?

The principal buffer against acidosis during exercise is intracellular phosphate groups.

An increase in the hydrogen ion concentration in contracting skeletal muscle can impair performance by hydrogen ions competing with calcium ions for binding sites on troponin.

Which of the following events occurs during exercise at work rates above 60-80% VO2 max?

Which of the following events are not primary sources of hydrogen ions during rigorous exercise?

Repeated bouts of high intensity exercise (e.g. ,interval training)can reduce arterial pH to levels as low as

Acidosis can occur due to

Introduction to Exercise Physiology

A: Common Measurements in Exercise Physiology

B: Common Measurements in Exercise Physiology

Control of the Internal Environment

Bioenergetics

Exercise Metabolism

Cell Signaling and Hormonal Response to Exercise

Exercise and the Immune System

The Nervous System: Structure and Control of Movement

Skeletal Muscle: Structure and Function

Circulatory Responses to Exercise

Respiration During Exercise

Temperature Regulation

Physiology of Training: Effect on Vo2 Max, Performance, and Strength

Preventing Chronic Disease: Physical Activity and Healthy Eating

Work Tests to Evaluate Cardiorespiratory Fitness

Exercise Prescriptions for Health and Fitness

Exercise Prescriptions for Health and Fitness

Nutrition and Body Composition for Health

Factors Affecting Performance

Laboratory Assessment of Human Performance

Training for Performance

Training for the Female Athlete, Children, Special Populations, and the Masters Athlete

Nutrition, Body Composition, and Performance

Exercise and the Environment

Ergogenic Aids

Filters

Which of the following events occurs during exercise at work rates above 60-80% VO₂ max?