B2 U1 2HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

B2 Respiration & combustion

• Take off your jacket
• Put your things on your desk

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 13-14

Lessongoals

• 1.2.3 You can explain the relationship between respiration in cells and physical activity.
  
• 1.2.4 You know that respiration uses oxygen and creates carbon dioxide.

Which substances are made during photosynthesis?

1. Oxygen and Glucose
2. Carbon dioxide and Glucose
3. Water and Oxygen
4. Water and Carbon dioxide

In what organelle is glucose broken down?

Why do mitochondria break down Glucose?

Examples of combustion

Combustion =

Chemical reaction between a substance and oxygen.

OR

The process of burning something

What happens during combustion?

• For combustion you need:

        - Fuel = The substance(s) that a burned/combusted

        - Oxygen (O₂)

• During/after combustion you get:

- Energy = Light, heat, movement

- Waste products = The subtance(s) that are created 

• As a reaction: Fuel + Oxygen -> Energy + Waste products

What is the fuel used in this combustion?

What types of energy do you get from this combustion?

What waste products will you get?

A sigaret

Answers these questions about a burning sigaret:

• What is the fuel?
• What are the waste products?
• What types of energy will be released?
• What is the reaction of this combustion?
• Tobacco + oxygen -> smoke + ash + heat + light

Combustion in organisms

Combustion in organisms = Respiration

Glucose + Oxygen -> Water + Carbon dioxide + Energy

                                        

• Moving
• Heat
• Growth
• etc.

a bit

a lot

How much respiration?

a bit

a lot

How much respiration?

What you should do:

• Read pages  13-14
• Do asgmt  1-9, 4k, 6k, 8k pgs. 14-17

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do:

• Read pages 13-14
• Do asgmt 1-9, 4k, 6k, 8k pgs. 14-17

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

End

• 1.2.3 You can explain the relationship between respiration in cells and physical activity.
• 1.2.4 You know that respiration uses oxygen and creates carbon dioxide.

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish