Laatste les 18-1-2022

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Repetition of basics 1 and 2 

18-1-2022 biology

Learning goals

After this lesson:

- You know what your tips and tops are when making a research report

- You have repeated the theory of the previous two lessons

Research report

1. Open the document of your own research report which I've sent by mail

2. Read all the feedback I've given

3. Write down a tip and a top for yourself

What three sections make up the body?

What are limbs?

How much bones does a baby have?

1. 200
2. 300
3. 250
4. 350

How much bones do we have?

1. 206
2. 250
3. 210
4. 300

What are the 4 functions of the skeleton?

The ribcage protects the...

1. brain
2. lungs & heart
3. liver
4. stomach

Our bones consist mainly of...

1. Collagen
2. Calcium phosphate and collagen
3. calcium phosphate

The function of collagen=

1. Giving the bones rigidity
2. Making the bone tissue a little bit flexible

The function of calcium phosphate=

1. Makes the bone tissue strong and rigid
2. Keeps the bone tissue a little bit flexible

What would happen when our bones don't have calcium phosphate and collagen?

Tell me the difference between cartilage tissue and bone tissue (I want to see the words calcium phosphate and collagen in your answers!)

Does the composition of our bones change during our development?

1. Yes
2. No

What happens during our development?

1. The amount of collagen in the bones decreases and the amount of calcium phosphate decreases
2. The amount of collagen in the bones increases, and the amount of calcium phosphate increases
3. Cartilage tissue changes into bone tissue and the amount of collagen increases
4. Cartilage tissue changes into bone tissue and the amount of collagen decreases

What's the reason that the bones of older people break more easily?

1. The extraceullular material doesn't contain much collagen
2. The extracellular material doesn't contain much calcium phosphate

Tell me in short:
- What is a fontanelle?
What's the function of fontanelles? (give me min. 2 functions)

Homework next lesson

Do exercise 5, 6 and 7

Make me proud and do your best for biology!!