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8C respiration
By Katie Bruce
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Last updated 5 months ago
30 questions
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Question 1
1.
What is the word equation for aerobic respiration?
Oxygen + Glucose → Carbon Dioxide + Water + Energy
Carbon Dioxide + Water → Oxygen + Glucose
Oxygen + Glucose --> Carbon dioxide + water
Glucose + Water → Oxygen + Carbon Dioxide
Question 2
2.
What is the main purpose of respiration?
To produce carbon dioxide
To release energy for cells
To create oxygen
To break down food into waste
Question 3
3.
Where does respiration mainly take place in a cell?
Nucleus
Ribosomes
Mitochondria
Cell membrane
Question 4
4.
What gas is needed for aerobic respiration?
Oxygen
Nitrogen
Carbon dioxide
Hydrogen
Question 5
5.
What is produced in anaerobic respiration in humans?
Alcohol
Lactic acid
Oxygen
Carbon monoxide
Question 6
6.
Why does anaerobic respiration happen in muscles?
There is plenty of oxygen available
The body needs extra energy, and there is not enough oxygen
It happens only when you are asleep
It removes waste products from the body
Question 7
7.
What is the word equation for anaerobic respiration in humans?
Glucose → Carbon Dioxide + Water + Energy
Glucose → Lactic Acid + carbon dioxide
Oxygen + Glucose → Carbon Dioxide + Water + Energy
Glucose + Oxygen → Lactic Acid + Water
Question 8
8.
What problem can lactic acid cause in muscles?
It increases energy levels
It causes muscle fatigue and cramping
It makes muscles stronger
It cools down the body
Question 9
9.
What is oxygen debt?
The amount of oxygen needed to break down lactic acid
The amount of oxygen stored in muscles
The amount of oxygen lost when breathing
The amount of oxygen in the air
Question 10
10.
How do cells use the energy released from respiration?
To grow and repair
To generate heat
For movement
All of the above
Question 11
11.
Which organ is responsible for gas exchange in humans?
Heart
Liver
Lungs
Stomach
Question 12
12.
What happens when you inhale?
Your diaphragm moves up and your chest gets smaller
Your diaphragm moves down and your chest expands
Your ribs move down and in
Your lungs get smaller
Question 13
13.
What happens to oxygen in the alveoli?
It moves into the blood
It moves into the lungs
It turns into carbon dioxide
It moves into the stomach
Question 14
14.
What gas is removed from the body when you exhale?
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
Question 15
15.
Why do alveoli have a large surface area?
To store more air
To allow faster diffusion of gases
To keep the lungs warm
To help oxygen dissolve in blood
Question 16
16.
What is the role of the diaphragm in breathing?
It pumps blood around the body
It helps the lungs expand and contract
It digests food
It filters oxygen from the air
Question 17
17.
How does oxygen enter the bloodstream from the alveoli?
It is absorbed through the skin
It diffuses into the blood
It is pumped by the heart into the lungs
It is actively transported by red blood cells
Question 18
18.
What are the tiny air sacs in the lungs called?
Bronchi
Bronchioles
Alveoli
Capillaries
Question 19
19.
Which of the following does not happen when you breathe out?
Your diaphragm moves up
Your ribs move down
Air is pushed out of the lungs
Your chest expands
Question 20
20.
What is the function of cilia and mucus in the respiratory system?
To store oxygen
To trap dust and microbes
To produce energy
To make air warmer
Question 21
21.
What happens to your breathing rate during exercise?
It slows down
It stays the same
It increases
It stops
Question 22
22.
Why does your breathing rate increase during exercise?
To take in more oxygen for respiration
To remove nitrogen from the body
To help digest food
To make your muscles bigger
Question 23
23.
Which gas is produced more during exercise and needs to be removed?
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
Question 24
24.
Why do muscles need more energy during exercise?
To store more fat
To contract and move
To get rid of carbon dioxide
To make new cells
Question 25
25.
How does exercise strengthen the lungs?
It increases lung capacity
It decreases lung function
It stops gas exchange
It thickens the alveoli walls
Question 26
26.
What happens to heart rate during exercise?
It slows down
It stays the same
It increases
It stops
Question 27
27.
Which body system works with the respiratory system to deliver oxygen to muscles?
Digestive system
Nervous system
Circulatory system
Skeletal system
Question 28
28.
How does regular exercise affect resting breathing rate over time?
It increases it
It decreases it
It stops it
It stays the same
Question 29
29.
Which of these is a long-term effect of regular exercise?
Weaker heart
Improved lung efficiency
Less oxygen supply
Reduced energy production
Question 30
30.
Why do athletes recover more quickly after exercise?
Their muscles produce less lactic acid
Their hearts and lungs are more efficient
Their blood has less oxygen
They do not need respiration