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Lesson 1: Respiration and testing

Chapter 5 (kerboodle) 
Breathing and respiration
Lesson 1: Respiration and Testing (p.62-66)
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Slide 1: Tekstslide
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In deze les zitten 14 slides, met interactieve quiz en tekstslides.

time-iconLesduur is: 45 min

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Chapter 5 (kerboodle) 
Breathing and respiration
Lesson 1: Respiration and Testing (p.62-66)

Slide 1 - Tekstslide

Why can't we hold our breath for long?
Video: https://www.schooltv.nl/video/proefkonijnen-in-de-klas-hoelang-kun-je-je-adem-inhouden-onder-water/

Slide 2 - Tekstslide

Some questions: 
  • Why is breathing so important?
  • What is the function of the lungs? 
  • What is the function of the blood? 
  • Why is it more difficult to hold your breath when you are moving? 

Slide 3 - Tekstslide

What is the formula of respiration? 
->
Glucose
Oxygen
Energy
Carbon dioxide
Water

Slide 4 - Sleepvraag

Respiration
Getting energy from food 
  • Our fuel is glucose
  • Oxygen is needed to break down glucose (breathing)

Because oxygen is needed we call it:
Aerobic respiration 

Slide 5 - Tekstslide

Using energy
-Muscles
-Transporting chemicals
-Absorbing food
-Sending messages along nerves
-Building cells for growth
-Keeping a constant body temperature

Slide 6 - Tekstslide

Where is the energy produced? 
I’m a real “powerhouse” 
That’s plain to see

I break down food

And release energy 


Slide 7 - Tekstslide

Where is the energy produced? 
I’m a real “powerhouse” 
That’s plain to see

I break down food

And release energy 

Mitochondria

Respriration takes place in all cells all the time! 

Slide 8 - Tekstslide

Carbon dioxide 
  • Waste gas made in respiration
  • becomes toxic if it builds up in cells
  • we need to get rid of it
  • More excersize-> faster and deeper we breathe to remove it



Slide 9 - Tekstslide

Testing for carbon dioxide
  • Lime water goes cloudy when CO2 is added

Slide 10 - Tekstslide

More carbon dioxide out? 

Slide 11 - Tekstslide

Rate of respiration 
How fast respiration takes place
 -Rate at which oxygen is used up        
OR
 -Rate at which carbon dioxide is produced

You need to use a Respirometer 

Slide 12 - Tekstslide

Respirometer
  • Soda lime takes up CO2
  • Removal of oxygen reduces the volume and pressure
  • Coloured water moves towards the organisms 


*The distance moved by the fluid is therefore affected only by the oxygen taken up and not by the carbon dioxide given out.

Slide 13 - Tekstslide

HW for next lesson
-WB page 46
-Paperclip worksheet 1 

Slide 14 - Tekstslide