YR1_T2_LSN8

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Slide 1: Tekstslide
ScienceMiddelbare schoolhavo, vwoLeerjaar 1

In deze les zitten 16 slides, met tekstslides en 2 videos.

Onderdelen in deze les

Get ready
  • Your Macbook (join the LessonUp lesson)
  • Your notebook.
  • Your textbook.
  • Pen & highlighter

Slide 1 - Tekstslide

Topic 2 Lesson 8

Slide 2 - Tekstslide

Plan for today
  • Planning upcoming lessons
  • Explanation T2.4 Combustion in the body
  • Work on homework

Slide 3 - Tekstslide

Planning upcoming lessons
  • Next week:                           Theory 2.5 
  • Week after:                           Recap Topic 2 + Glossary test
  • Week after that week:     Test Topic 2 

Slide 4 - Tekstslide

T2.4 Combustion in the body

Slide 5 - Tekstslide

Learning goals
  • I know the difference between aerobic and anaerobic respiration 
  • I know the chemical formula of both aerobic and anaerobic respiration 
  • I know the disadvantages of anaerobic respiration
  • I know what fermentation is and can give examples of fermentation in different foods
  • I know the chemical formula for fermentation

Slide 6 - Tekstslide

Key words
  • Combustion
  • Aerobic respiration
  • Anaerobic respiration
  • Oxygen debt
  • Fermentation

Slide 7 - Tekstslide

Energy
Energy is needed for survival and is used for:
  • Building new cells
  • Movement
  • Heat

Food webs show sources of energy for different organisms
Digestion breaks down the food into smaller molecules
Respiration is the process of getting the energy from these molecules
Combustion is the process of burning something

Slide 8 - Tekstslide

Slide 9 - Video

Aerobic respiration
Aerobic respiration is combustion with oxygen 

The formula is:
 glucose + oxygen → carbon dioxide + water + energy


Formulas?





Slide 10 - Tekstslide

Aerobic respiration
Aerobic respiration is combustion with oxygen 

The formula is:
 glucose + oxygen → carbon dioxide + water + energy




Does the formula looks familiar? It is the opposite of photosynthesis!






Slide 11 - Tekstslide

Anaerobic respiration
Anaerobic respiration takes place when your cells don’t have enough oxygen, for example, when you exercise very hard.

The formula is: 
glucose → lactic acid + energy






Slide 12 - Tekstslide

Anaerobic respiration 
Anaerobic respiration has disadvantages:


  • Gives you way less energy
  • The lactic acid causes cramps
  • You will still breathe hard after exercising, this extra oxygen is needed to break down the lactic acid. This is called oxygen debt

Slide 13 - Tekstslide

Slide 14 - Video

Fermentation
Fermentation is anaerobic respiration that takes place in plants, fungi or bacteria

The formula is: 
glucose → alcohol + carbon dioxide + energy




This type of respiration is used to make beer
and wine, but also foods like bread, yogurt 
and sauerkraut.

Slide 15 - Tekstslide

Homework
Make question 33-42 in your textbook (pages 78-81) 






Slide 16 - Tekstslide