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Middle School: 6th, 7th and 8th Grade
Biology
Biology - Exercise And Health
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Q.1
What is the chemical that causes cramp?
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Glucose
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Lactose
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Glucosic acid
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Lactic acid
Q.2
After exercise, why do your heart rate and breathing rate stay higher than normal?
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To get rid of lactic acid
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Because it takes a while for your chest and heart muscles to slow down
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Because it takes time for messages to reach your brain to say that you have stopped exercising
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Because your body is staying ready just in case you start exercising again
Q.3
How does exercise help your circulation?
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By making you stronger and fitter
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By helping your body control it's metabolic rates
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By creating LDL cholesterol
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By increasing levels of HDL cholesterol
Q.4
Why is over exercising bad for you?
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It can strain your heart muscles
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It makes you go dizzy
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It takes up too much time
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You get too much protein in your blood
Q.5
Which of the following statements about a balanced diet is true?
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Carbohydrates include sugars and starch
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Proteins are needed for growth and repair
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Vitamins and minerals are needed in large quantities
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Fats can come from both animal and plant sources
Q.6
During exercise, breathing rate and heart rate both increase. Why?
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To deliver more oxygen to your muscles
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Because you are using up the nutrients from your last meal
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To deliver more oxygen to your stomach so that you can release more energy from your food
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Because your blood vessels are bigger
Q.7
Which long term health problem is related to a lack of exercise?
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Heart disease
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Beri-beri
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Strokes
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Diabetes
Q.8
What is metabolic rate?
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The speed of eating
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The speed of digestion
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The speed of the chemical reactions in your body
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The speed your blood flows through your arteries
Q.9
Which of the following statements is true about your metabolic rate after exercise?
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It increases permanently
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It decreases permanently
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It stays high for a while and then goes back to normal
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It stays low for a while and then goes back to normal
Q.10
Why do your muscles need to be supplied with more blood during exercise?
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They are contracting and relaxing
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Blood makes them larger so they can do more work
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Muscle cell respiration is greater during exercise
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So that they can get more protein for energy
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