1.6 the energy circle of life

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

What do we need in order to stay alive? 

Oxygen

Food

In our cells, we can make energy out of food. 

For this process oxygen is needed.

Which organelles can do this?

In our cells, we can make energy out of food. 

For this process oxygen is needed.

1.6 the energy circle of life

Mitochondria: respiration => producing energy from glucose with oxygen

Chloroplasts: photosynthesis => making glucose and oxygen from carbon dioxide and water using sunlight 

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 

The gas produced during respiration

1. CO2
2. O2
3. H2O
4. N

During respiration glucose is broken down to release

1. Water
2. CO2
3. Energy
4. Oxygen

What is the formula of respiration? 

->

Glucose

Oxygen

Energy

Carbon dioxide

Water

WHAT IS THE NAME OF THE PROCESS PLANTS DO TO MAKE SUGARS FROM SUNLIGHT?

1. CHLOROPLASTS
2. RESPIRATION
3. PHOTOSYNTHESIS
4. DIGESTION

Where do we get the food from?

Plants can make their own food, which is also food for us

How do they do this? 

photosynthesis

photosynthesis

Day

Night

CO₂

O₂

Photosynthesis

Respiration

Photosynthesis

                   +                      -->                       +

Respiration

                   +                      -->                          +

______________________________________________________

Carbon dioxde

Carbon dioxide

Oxygen

Oxygen

Water

Water

Glucose

Glucose

Sunlight

Energy