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YR1_T2_LSN6
HAVE READY
YOUR TEXTBOOK
YOUR NOTEBOOK
A PEN/MARKER
YOUR MACBOOK (JOIN THIS LESSONUP)
1 / 12
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Science
Middelbare school
havo, vwo
Leerjaar 1
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HAVE READY
YOUR TEXTBOOK
YOUR NOTEBOOK
A PEN/MARKER
YOUR MACBOOK (JOIN THIS LESSONUP)
Slide 1 - Slide
TOPIC 2: Being in the world
In this topic you will learn about food chains, molecules in food, the digestive system, combustion inside and outside the body.
p. 45-89
Slide 2 - Slide
TOPIC 2.4: COMBUSTION IN THE BODY
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
p. 76-81
Slide 3 - Slide
TOPIC 2.4: COMBUSTION IN THE BODY
Combustion
Aerobic respiration
Anaerobic respiration
Oxygen debt
Fermentation
p.76-81
Slide 4 - Slide
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
combustion inside the body is respiration!
p.76-81
Slide 5 - Slide
Slide 6 - Video
AEROBIC RESPIRATION
Aerobic respiration
is combustion with oxygen
The formula is:
glucose + oxygen → carbon dioxide + water + energy
Do you remember the chemical formulas for these substances?
p.76-81
FORMULA
Slide 7 - Slide
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
Do you remember the chemical formulas for these substances?
p.76-81
FORMULA
Slide 8 - Slide
ANAEROBIC RESPIRATION
This type of 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
p.76-81
Slide 9 - Slide
Slide 10 - 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.
p.76-81
FORMULA
Slide 11 - Slide
Hw for the next lesson
Complete all the exercises of § 2.4.
Study the words of lessons 1-5 on WRTS.
Read and highlight the text of §2.5.
Complete and review your notes.
Update your summary on Google Classroom.
p. 76-89
Slide 12 - Slide
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