1.2 part 2 respiration

• Biologie
• Middelbare school
• havo
• Leerjaar 2

From previous lessons

Why is it more healthy to breathe through your nose?

Put the organs in the correct order

Air enters the body

Gas exchange

Nasal cavity

Alveoli

Pharynx

Larynx

Bronchi

Bronchioles

Trachea

Which of the following processes do not take place in the alveoli?

1. Filtering the air
2. Gas exchange
3. Respiration
4. Diffusion

Finish the sentence:
'Gas exchange ...'

Which process is shown in the picture?

1. Diffusion
2. Osmosis
3. Gas exchange
4. Respiration

1.2 part 2 respiration

what is air?

a mixture of....

oxygen, carbon dioxide, nitrogen and water vapour

what happens to these gasses?

Air is a mixture of gasses 

so 21- 17 = 4% O2 is used in the body

so 4-0,04=3,96% CO2 is waste from the body

a lot of water is exhaled!

Why?

• Occurs in the mitochondria

glucose

cellular respiration

glucose + oxygen => water vapour + carbon dioxide + energy

(C6H12O6 + 6 O2 => 6 H2O + 6 CO2 +  energy)

What is the formula of respiration? 

+

+

+

Glucose

Oxygen

Energy

Carbon dioxide

Water

why do organisms need cellular respiration? the energy is needed for  

- to move (muscle contractions) 

- to keep 37C body temperature 

- to grow or to repair or replace damaged cells 

which compound isn't part of the air we breathe?

1. oxygen
2. nitrogen
3. carbon dioxide
4. helium

Make these exercises

Workbook chapter 1.2: 9 to 12, 15, 19

What you don't finish is homework