8C respiration - Katie Bruce | Biblioteka

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

1

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

1

Where does respiration mainly take place in a cell?

Nucleus

Ribosomes

Mitochondria

Cell membrane

1

What gas is needed for aerobic respiration?

Oxygen

Nitrogen

Carbon dioxide

Hydrogen

1

What is produced in anaerobic respiration in humans?

Alcohol

Lactic acid

Oxygen

Carbon monoxide

1

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

1

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

1

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

1

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

1

How do cells use the energy released from respiration?

To grow and repair

To generate heat

For movement

All of the above

1

Which organ is responsible for gas exchange in humans?

Heart

Liver

Lungs

Stomach

1

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

1

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

1

What gas is removed from the body when you exhale?

Oxygen

Carbon dioxide

Nitrogen

Hydrogen

1

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

1

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

1

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

1

What are the tiny air sacs in the lungs called?

Bronchi

Bronchioles

Alveoli

Capillaries

1

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

1

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

1

What happens to your breathing rate during exercise?

It slows down

It stays the same

It increases

It stops

1

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

1

Which gas is produced more during exercise and needs to be removed?

Oxygen

Carbon dioxide

Nitrogen

Hydrogen

1

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

1

How does exercise strengthen the lungs?

It increases lung capacity

It decreases lung function

It stops gas exchange

It thickens the alveoli walls

1

What happens to heart rate during exercise?

It slows down

It stays the same

It increases

It stops

1

Which body system works with the respiratory system to deliver oxygen to muscles?

Digestive system

Nervous system

Circulatory system

Skeletal system

1

How does regular exercise affect resting breathing rate over time?

It increases it

It decreases it

It stops it

It stays the same

1

Which of these is a long-term effect of regular exercise?

Weaker heart

Improved lung efficiency

Less oxygen supply

Reduced energy production

1

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