Lesson 4.4.2.2
4.4.2.2 Response to exercise Quiz: AQA Combined Science, Unit 4
20 questions
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Lesson 4.4.2.2, Response to exercise: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 4: Bioenergetics, written with Revision Ninja.
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The 20 questions
-
Why does heart rate increase during vigorous exercise?
- Cool the skin
- Deliver oxygen
- Increase carbon dioxide
- Remove glucose
-
What physiological change helps supply more oxygen to muscles during exercise?
- Increased breathing rate
- Reduced blood flow
- Decreased heart rate
- Slower digestion
-
What does a build-up of lactic acid in muscles cause?
- Improved concentration
- Increased oxygen supply
- Faster photosynthesis
- Fatigue
-
What term describes the extra oxygen needed after exercise to remove lactic acid?
- Oxygen debt
- Tidal volume
- Cardiac output
- Vital capacity
-
What causes muscle fatigue during prolonged vigorous physical activity?
- Protein synthesis
- Excess water gain
- Ethanol accumulation
- Lactic acid build-up
-
Which process occurs in human muscles when insufficient oxygen is supplied?
- Aerobic respiration
- Photosynthesis
- Fermentation
- Anaerobic respiration
-
Which substance builds up in muscles during vigorous exercise?
- Carbon dioxide only
- Ethanol
- Lactic acid
- Starch
-
During running, why does an athlete's heart rate rise significantly?
- Slower metabolism
- Higher energy demand
- Lower body temperature
- Reduced water loss
-
What causes muscle pain and fatigue after a fast sprint?
- Carbon dioxide
- Glycogen
- Ethanol
- Lactic acid
-
What is the primary reason for heavy breathing immediately after exercise?
- Produce insulin
- Cool down skin
- Absorb glucose
- Repay oxygen debt
-
Which factor directly causes inefficient muscle contraction during fatigue?
- High glucose levels
- Excess oxygen
- Lactic acid accumulation
- Increased glycogen
-
A student increases exercise intensity. Which variable is the dependent variable?
- Room temperature
- Time of day
- Exercise intensity
- Heart rate
-
How does anaerobic respiration in muscles compare to aerobic respiration?
- Produces carbon dioxide
- Requires more oxygen
- Transfers less energy
- Produces more ATP
-
Why does a runner's breathing rate increase during a race?
- Increase oxygen intake
- Store nitrogen
- Remove glucose
- Reduce heart rate
-
Why does oxygen debt persist for a short time after exercise stops?
- Digest food
- Synthesise protein
- Cool the body
- Oxidise lactic acid
-
A person's heart rate rises from 70 to 140 beats per minute during exercise. What is the percentage increase?
- 100%
- 70%
- 200%
- 50%
-
What defines an oxygen debt after vigorous exercise?
- Extra carbon dioxide
- Extra oxygen needed
- Glucose depletion
- Lactic acid production
-
Which factor causes muscles to become fatigued sooner during intense activity?
- Glucose supply
- Anaerobic respiration
- Aerobic respiration
- Oxygen supply
-
What is lactic acid converted into after being transported to the liver?
- Glycerol
- Glycogen
- Glucose
- Urea
-
Why do heart rate and breath volume increase during exercise?
- Absorb nitrogen
- Remove glucose
- Supply oxygen
- Produce urea
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