Science of Exercise Coursera Quiz Answers | 100% Correct Answers

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Science of Exercise Coursera Quiz Answers

Week 1 Quiz

1. What is the primary source of energy during a single maximal bench press:

• ATP
• Creatine phosphate
• Glucose
• Fat

2. What are the primary sources of energy during a 100-meter dash:

• Fat, Creatine phosphate, ATP
• Glucose, Creatine phosphate, ATP
• Glucose, Fat, Creatine phosphate, ATP
• Glucose, Creatine phosphate, Fat

3. What are the primary sources of energy during a marathon:

• Creatine phosphate
• Fats & carbohydrates
• Fats only
• Carbohydrates only

4. Regarding the “crossover concept” which of the following is true ( select all that apply ):

• At easy exercise intensities fat is the preferred fuel
• At easy exercise intensities carbohydrate is the preferred fuel
• At hard exercise intensities fat is the preferred fuel
• At hard exercise intensities carbohydrate is the preferred fuel

5. The major site of ATP production during aerobic exercise is:

• Sarcoplasmic reticulum
• Cell nucleus
• Mitochondria
• Hemoglobin

6. Indirect calorimetry can be used during exercise to:

• Estimate an individual’s metabolic rate
• Measure the rate of heat production
• Measure the rate of oxygen production
• Measure the rate of carbon dioxide consumption

7. The Respiratory Exchange Ratio is:

• 0.70 for carbohydrates
• 1.0 for fats
• A ratio of carbon dioxide produced to oxygen consumed
• A ratio of oxygen consumed to carbon dioxide produced

8. The major regulator of blood glucose during a 30 min submax exercise bout is:

• Muscle glycogenolysis
• Adipose lipolysis
• Liver glycogenolysis
• All of the above

9. Maximal oxygen consumption would be the highest for:

• A sprinter
• A body builder
• A gymnast
• A marathon runner

10. Adaptations to a training program primarily relate to the:

• Reversibility Principle
• Overload Principle
• Specificity Principle
• Individuality Principle

11. Who would most likely be in positive nitrogen balance:

• A golfer on a high protein diet
• A marathoner on a high protein diet
• A cyclist on a high protein diet
• A body builder on a high protein diet

12. Which is true regarding the rate of protein synthesis:

• It decreases during exercise and increases post-exercise
• It increases during exercise and increases post-exercise
• It decreases during exercise and decreases post-exercise
• It increases during exercise and decreases post-exercise

13. Which of the following is a source of carbohydrates for the body during exercise?

• Muscle glycogen
• Blood glucose
• Liver glycogen
• Liver gluconeogenesis
• All of the above

14. Endurance training will result in:

• An increase in carbohydrate utilization and fat sparing
• An increase in fat utilization and carbohydrate sparing
• An increase in fat and carbohydrate utilization
• A decrease in fat and carbohydrate utilization

15. Which is true regarding fuel stored in the body:

• There is significantly more carbohydrate than fat
• There are equal amounts of carbohydrate and fat
• These fuels will not deplete during any exercise
• There is significantly more fat than carbohydrate

Week 2 Quiz

1. An isometric contraction is one in which there is:

• No change in muscle length with tension development
• A shortening of muscle with tension development
• A lengthening of muscle with tension development
• None of the above

2. What best describes a Type I muscle fiber:

• High in mitochondria, high resistance to fatigue, relies on aerobic energy production
• Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
• High in mitochondria, low resistance to fatigue, relies on aerobic energy production
• High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

3. What best describes a Type IIx muscle fiber:

• High in mitochondria, high resistance to fatigue, relies on aerobic energy production
• Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
• High in mitochondria, low resistance to fatigue, relies on aerobic energy production
• High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

4. Which best describes muscle fiber type recruitment during a graded-exercise test:

• Type IIx first followed by Type IIa and finally Type I
• Type IIa first followed by Type IIx and finally Type I
• Type I first followed by Type IIx and finally Type IIa
• Type I first followed by Type IIa and finally Type IIx

5. Distance athletes have the greatest percentage of:

• Type IIx muscle fibers
• Type IIa muscle fibers
• Type I muscle fibers
• An equal percentage of all 3 fiber types

6. Which is not a major role of the Respiratory System during exercise:

• Maintain arterial oxygen levels
• Eliminate carbon dioxide
• Assist with buffering of metabolic acids
• Maintain cardiac output

7. The optimal and most efficient way to increase ventilation during exercise is to:

• Increase tidal volume more than breathing frequency
• Increase breathing frequency more than tidal volume
• Increase tidal volume and breathing frequency equally

8. Which is not a major role of the Cardiovascular System during exercise:

• Shunt blood flow from viscera
• Muscle glycogenolysis
• Increase local muscle blood flow
• Increase cardiac output

9. Heart rate increases during exercise as a result of:

• An increase in parasympathetic and sympathetic nerve activity
• A decrease in parasympathetic nerve activity and an increase in sympathetic nerve activity
• A decrease in parasympathetic and sympathetic nerve activity
• A decrease in circulating epinephrine

10. What is the Fick equation:

.

.

.

11. Which is not a way to increase blood flow to active muscles:

• Increase cardiac output
• Vasodilation of blood vessels in active muscles
• Vasoconstriction of blood vessels in the viscera
• An increase in ventilation

12. Which is true regarding insulin:

• It promotes glucose uptake by both muscle and liver
• It promotes fat mobilization from adipose tissue
• It promotes glycogen breakdown in muscle
• It promotes glycogen breakdown in liver

13. Which is true regarding glucagon:

• It promotes glucose uptake by both muscle and liver
• It promotes fat synthesis in adipose tissue
• It promotes glycogen breakdown in muscle
• It promotes glycogen breakdown in liver

14. Which is not a role for epinephrine during exercise:

• Increase heart rate
• Increase stroke volume
• Increase glycogen breakdown in muscle
• Increase fat mobilization from adipose tissue
• None of the above

15. Which is true regarding exercise and the immune system:

• An intense bout of exercise will transiently enhance immune function
• An intense bout of exercise will transiently suppress immune function
• A moderate bout of exercise will transiently enhance immune function
• A moderate bout of exercise will transiently suppress immune function

Week 3 Quiz

1. The main components of a sound endurance training program include all but one of the following:

• The exercise frequency
• The exercise duration
• The exercise time of day
• The exercise intensity

2. The term “muscle plasticity” (select all that apply):

• Refers to the capacity for adaptive change
• Is characterized by altered gene expression following a repeated stimulus
• Applies to all types of muscle proteins

3. Which is false regarding adaptations to endurance training?

• It will increase maximal heart rate
• It will increase maximal stroke volume
• It will increase maximal (a-v)O2 difference
• None of the above

4. Which is true regarding detraining:

• Maximal stroke volume decreases the fastest
• Mitochondrial numbers decrease the fastest
• Maximal heart rate decreases the fastest
• VO2max decreases the fastest

5. To maximize muscle mass and strength gains from a resistance training program one should:

• Perform many repetitions per set at a low percentage of their 1-Repetiton maximum
• Perform fewer repetitions per set at a low percentage of their 1-Repetiton maximum
• Perform many repetitions per set at a high percentage of their 1-Repetiton maximum
• Perform fewer repetitions per set at a high percentage of their 1-Repetiton maximum

6. Increases in strength associated with a resistance training program are:

• Initially due to muscle hypertrophy followed by neural adaptations weeks later
• Initially due to both muscle hypertrophy and neural adaptations
• Initially due to neural adaptations followed by muscle hypertrophy weeks later
• None of the above

7. For the endurance athlete the best time to replenish muscle glycogen stores would be:

• Within the first 2-hours after exercising when insulin sensitivity is high
• Within the first 12-hours after exercising when insulin sensitivity is high
• Within the first 2-hours after exercising when insulin sensitivity is low
• Within the first 12-hours after exercising when insulin sensitivity is low

8. Dehydration can negatively impact performance by all but one of the following mechanisms:

• A decrease in plasma volume
• A decrease in stroke volume
• A decrease in heart rate
• A decrease in cardiac output

9. Likely causes for fatigue during short-term high-intensity exercise are:

• A depletion of ATP, creatine phosphate and hydrogen ions
• A depletion of ATP and an accumulation of creatine phosphate and hydrogen ions
• A depletion of creatine phosphate and an accumulation of ATP and hydrogen ions
• A depletion of ATP and creatine phosphate and an accumulation of hydrogen ions

10. Likely causes for fatigue during long-term lower-intensity exercise are:

• A depletion of muscle glycogen & calcium and an increase in body temperature
• A depletion of creatine phosphate and an accumulation of hydrogen ions
• A depletion of muscle glycogen & calcium and a decrease in body temperature
• A depletion of muscle glycogen and an increase in muscle calcium

11. The main cause for delayed onset muscle soreness is:

• Isometric muscle contractions
• Concentric muscle contractions
• Eccentric muscle contractions
• All of the above

12. The main cause for immediate muscle soreness experienced during exercise is:

• Isometric muscle contractions
• Concentric muscle contractions
• Eccentric muscle contractions
• All of the above

13. Which is true regarding anabolic steroids:

• They have few side effects
• They are similar in structure to testosterone
• They are administered by injection only
• They are not as effective as the human growth hormone for increasing muscle mass

14. Which athlete would benefit the most from blood doping:

• A body builder
• A gymnast
• A sprinter
• A 10K runner

15. Which is not a mechanism whereby caffeine may improve exercise performance:

• Increase mental alertness
• Increase creatine phosphate stores
• Increase fat mobilization
• Increase time to exhaustion

Week 4 Quiz

1. Which is the greatest risk factor for all-cause mortality:

• High cholesterol
• Physical inactivity
• Hypertension
• Obesity

2. Select all that apply – Regular exercise can reduce the risk for:

• Depression
• Heart disease
• Type 2 diabetes
• Obesity

3. Which is false regarding visceral fat:

• It is the fat located around inner organs
• It puts an individual at a greater risk for Type 2 diabetes
• It puts an individual at a greater risk for heart disease
• It is less of a health risk than subcutaneous fat

4. In order to lose and maintain weight loss an individual must:

• Maintain energy balance through diet and exercise
• Maintain a negative energy balance through diet and exercise
• Maintain a positive energy balance through diet and exercise
• Use dieting alone to lose and maintain weight loss

5. The benefits of exercise on the risk factors for heart disease include all but one of the following:

• Decreased cigarette smoking
• Decreased hypertension
• Decreased obesity
• Decreased LDL cholesterol

6. Which is false regarding atherosclerosis:

• It is caused by deposits of fatty plaques in arteries
• It increases the risk of a stroke
• It is caused by elevated HDL cholesterol levels
• It increases the risk of a heart attack

7. Type 2 diabetes is:

• Characterized by the development of insulin resistance
• Characterized by the development of hypoglycemia
• Characterized by the development of insulin sensitivity
• Characterized by the development of subcutaneous fat

8. Regular exercise can help to prevent and treat Type 2 diabetes by:

• Increasing blood glucose and insulin sensitivity
• Decreasing blood glucose and increasing insulin sensitivity
• Increasing blood glucose and decreasing insulin sensitivity
• Decreasing blood glucose and insulin sensitivity

9. Regular exercise can reduce the risk of cancer by all but one of the following mechanisms:

• Increasing specific growth factors
• Enhancing natural immunity
• Increasing levels of antioxidants
• Lowering body fat

10. Regarding exercise as a treatment for cancer patients, which of the following is false:

• It can reduce cancer-related fatigue
• It can reduce recurrence and mortality in some cancers
• It can reduce depression and anxiety
• It is less effective than pharmaceutical interventions for cancer-related fatigue

11. The functional consequences of sarcopenia include:

• Decrease in muscle mass & strength, increased risk of falling, increase in bone density
• Decrease in muscle mass & strength, decreased risk of falling, decrease in bone density
• Decrease in muscle mass & strength, increased risk of falling, decrease in bone density
• Increase in muscle mass & strength, increased risk of falling, decrease in bone density

12. Regarding exercise and osteoporosis which is true:

• Exercise will increase calcium deposition into bone decreasing bone mineral density
• Exercise will decrease calcium deposition into bone increasing bone mineral density
• Exercise will decrease calcium deposition into bone decreasing bone mineral density
• Exercise will increase calcium deposition into bone increasing bone mineral density

13. The decline in VO2max with advancing age is:

• Similar for trained and untrained individuals
• Due to a reduction in maximal cardiac output but not maximal (a-v)O2 difference
• Partially offset by aerobic training at any age
• Due to a reduction in maximal (a-v)O2 difference but not maximal cardiac output

14. Which is true regarding a single bout of exercise and the brain:

• Exercise increases neuroelectrical activity but not brain blood flow
• Exercise increases brain blood flow but not neuroelectrical activity
• Exercise brain blood flow and neuroelectrical activity are similar to rest
• Exercise increases brain blood flow and neuroelectrical activity

15. Regular exercise can:

• Decrease the risk of dementia, symptoms for Parkinson’s disease and increase depression
• Decrease the risk of dementia, symptoms for Parkinson’s disease and depression
• Increase the risk for dementia but reduce the risk for depression
• Increase the symptoms for Parkinson’s disease but reduce the risk for Alzheimer’s disease

Conclusion

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