1.6

• Biologie
• Middelbare school
• vmbo t, mavo, havo
• Leerjaar 2

Welcome- 2EH

• Please take your seat
• Get you notebook ,  book and pen.
• Take out your coat and wait quietly for the Assignment in the next dia. 

To do:

Make ex. 10 , p.40-41

Done? 

Read p. 42 -44

Goals 

can describe how gas exchange occurs in various different groups of animals.

Fish

Gills = breathing organs of fish

• Gill arch
• Gill filament
• Lamellae = thin filaments containing capillaries 

Oxygen goes to the blood in the gill lamellae.

Carbon dioxide goes to the water that flows along the gill lamellae.

Countercurrent exchange system

exchange of substances between two flowing liquids or gases, such as oxygen and carbon dioxide, flowing in opposite directions to each other

Insects

Tracheae= breathing tubes within an insect. 

• Spiracles = holes on the sides of an insect’s body where air enters and leaves

Oxygen enters the trachea and carbon dioxide leaves the trachea as the abdomen becomes larger and smaller.

Unicellulars

Unicellulars don't have a particular respiratory system, as they are just one cell that is directly in touch with the environment.  

most worm species breath through their skin.

Birds

Birds have different lungs than humans, as they can't directly move. Instead they have air sacs that can store air, and move air pass the lungs. That way gas exchange can still take place. 

Red blood cells release ?

? attaches to red blood cells

We call this ? in the lungs

Oxygen rich blood is being transported to all of the ?

Carbon dioxide leaves  the body through the ?

Oxygen

Lungs

Carbon dioxide

Body parts

Gas exchange

What other forms of breathing are there besides the lungs?

What is the respiratory (breathing) system of an insect called?

1. lung
2. gill
3. tracheae
4. stomach

Trachea are:

1. respiratory vessels
2. tubes with air
3. vessels with air
4. holes

How do fish breathe?

1. with tracheae
2. with lungs
3. with gills
4. they don't

A wasp often makes movements with its abdomen, why does it make these movements.

1. Because he has too much energy
2. That's how he keeps his enemies at bay
3. He feels itchy
4. To breathe

In this animal, gas exchange takes place via the gills.

1. True
2. False

Carbon dioxide+ water (+energy) -> glucose + oxygen

This is the formula of..

1. Respiration
2. Photosynthesis

What gas is needed for respiration?

In this animal (dolphin species), gas exchange takes place via the gills

1. True
2. False

Where are a wasp's respiratory organs located?

1. Head
2. Thorax
3. Whole body

In which part of the gills does the countercurrent principle take place?

1. Gill arch
2. Gill cover
3. Lamellae
4. None of these answers are correct

Practice & H.W 

Read basic 6 : p.42-44

Complete ex. 1 - 10 , p.45-47

Basic 1.6

Done?

Complete : How it fits together (Fashionable facemasks)

P. 48-49