laatste les bio in real life

• Biologie
• Middelbare school
• havo
• Leerjaar 2

Biology in real life

Where do you see biology
in everyday life?

Examples:

food preservation

food production

medicins

oak procession caterpillar

circadian ritme (day and night rhyme)

Food preservation and biology...

What do you think?? 

Food preservation and biology

How can food spoil?

Food preservation and biology

How can food spoil?

• fungi
• bacteria
• dry out

Food preservation and biology

How can you preserve food?

•  What does bacteria 

         and fungi not like? 

Food preservation and biology

 What does bacteria and fungi not like? 

• high salt - fish / meat
• lots of sugar - fruit (jam)
• heating - milk / vegetables 
• acid - pickling
• no oxygen - bottling
• smoking - fish
• dry out - fruits
• cold - refrigerator
• chemicals -  

Food production and biology

What do you think?? 

Food production and biology

What do you think?? 

• food are biologic products
• growing vegetables 
• meat production - animals

Food production and biology

growing vegetables 

• genetics to get better products
• crop protection

meat production - animals

• animal health
• behaviour

Medicins and biology

What do you think? 

Medicines and biology

Examples of medicines with biologic origin: 

• penicillin 
• aspirine 
• hCG (pregnancy hormone)

        

•  morfine 

Medicines and biology

Examples of medicines with biologic origin: 

• penicillin - fungi
• aspirine - willow leaf
• hCG (pregnancy hormone)

       urine of pregnant women

• morfine - poppy / papaver (opium)

Oak procession caterpillar and biology

What do you think? 

- what are benefits? 

- what are disadvantages? 

Oak procession caterpillar and biology

Benefits: 

• food for birds

Disadvantages:

•  skin irritation
• breathing problems

Circadian right rhythm and biology

- Day and night rhythm

What do you think?? 

Circadian right rhythm and biology

hormone 

-> melatonin

Any other ideas?? 

Good luck!!

Enjoy your holiday!!!