CHECK YOUR KNOWLEDGE

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

Put the organs in the correct order

Air enters the body

Gas exchange

Nasal cavity

Alveoli

Pharynx

Larynx

Bronchi

Bronchioles

Trachea

Which small structure prevents food from entering your windpipe?

1. Uvula
2. Larynx
3. Epiglottis
4. Pharynx

Where does the glucose, needed for cellular respiration, come from?

1. Photosynthesis in plants
2. Gas exchange
3. Respiration
4. It is a waste product from photosynthesis

What is meant by the term 'diffusion'? Diffusion is ...

1. ... the movement of particles from a low concentration to a high concentration.
2. ... the active movement of particles; energy is needed for this movement.
3. ... the movement of particles from a high concentration to a low concentration.
4. ... the movement of particles through a partially permeable membrane.

When we exhale, the air pressure in the chest ...

1. Stays the same
2. Increases
3. Diffuses
4. Reduces

Which of the following does NOT happen when we exhale?

1. The rib cage moves downward and inwards – so that the air is squeezed out.
2. The intercostal muscles contract.
3. The intercostal muscles relax.
4. The diaphragm moves upwards.

What is the reason why we can’t breathe out our residual volume?

1. Because of the amount of nitrogen gas in the air; we need an amount of oxygen to stay in our lungs.
2. If we would empty out our lungs, the lungs would collapse.
3. Because of air pollution; we need an amount of clean air to stay in our lungs.
4. Because of carbon dioxide in the lungs.

What is one of the effects of the carbon monoxide in cigarette smoke?

1. It causes lung cancer
2. It causes throat cancer
3. It replaces oxygen in the red blood cells, so the blood cannot carry as much oxygen.
4. It's bad for your carbon footprint.

Which of the following is NOT a symptom of hay fever

1. A runny nose
2. Teary eyes
3. Eczema
4. A blocked nose

Do you feel like you've learnt a lot in yesterday's lesson?

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