Science - Grade 7

What kind of respiration that usually happens inside our cells?

• Anaerobic

• Aerobic

• Fermentation

• Photosyntheses

Trachea is also known as,

• Bronchi

• Bronchioles

• Windpipe

• Cartilage

Air sacs are also known as,

• Bronchioles

• Capillaries

• Alveoli

• Cartilage

What is the function of cartilage in your respiratory system?

• Air gets into your body through this

• Keep trachea open and prevent it collapsing

• Carries air deep into the lungs

• This is where the oxygen goes into the blood

Larynx of your respiratory system is also known as?

• Bronchi

• Trachea

• Voicebox

• Vocal cords

Is there any oxygen in the air you breathe out?

• Yes

• NO

The air you breathe in contains ……….. oxygen than the air you breathe out.

• Less

• More

When you breathe in,

• The intercostal muscles between the ribs contract

• The intercostal muscles between the ribs relax

• The muscles in the diaphragm relax

• The pressure inside the lungs increases

When we breathe out, the muscles in the diaphragm and between the ribs ………………….the volume of the chest

• Increase

• Decrease

Glucose + oxygen —————> carbon dioxide + water

Wha are the products of this reaction?

• Glucose and carbon dioxide

• Glucose and oxygen

• Carbon dioxide and water

• Oxygen and water