3.9 + 3.11 BMH1 a +b

• Biologie
• Middelbare school
• havo
• Leerjaar 1

3.9 specialised cells

Red blood cells

Main function: Carry oxygen

Red pigment: Haemoglobin, allows them to carry oxygen

Don't have a nucleus

Red blood cell

White blood cell

Red blood cells

-Carry oxygen

-No nucleus

-Filled with haemoglobin 

(binds oxygen)

Which are red blood cells?

fat cells 

Fat cells

- Nucleus and cytoplasm pushed to the side for the fat​

- Energy store​

- Keeps you warm

Bone cells 

Bone cells 

- Make fibres and excrete them into surroundings​

- Minerals + fibres  bone material​

- ​Bone cells are surrounded by bone material​

- They contact other cells and get nutrients through gaps in ​

   the bone ​

In the picture you can see bone tissue. What are the larger holes in the picture?

1. Canals, those contain blood vessels
2. The bone cells
3. The cartilage cells
4. Extracellular material

What type of cell is specialised to transport oxygen?

1. red blood cell
2. leucocyte
3. bone cell
4. nerve cell

What type of cell is specialised to protect our body against germs?

1. red blood cell
2. white blood cell
3. bone cell
4. nerve cell

What type of cell is specialised to transport signals?

1. red blood cell
2. white blood cell
3. bone cell
4. nerve cell

Plant cells

Plant cell with chloroplasten:

Roots

• Root system = all roots together
• Taproot and lateral roots
• Root hairs > take up water/minerals

            -very sensitive

            -very small

Roots

-Functions:

-Absorb water with minerals

-Firmness in the soil.

-Store food (like sugar).

-Consist of: Tap root(hoofdwortel), lateral roots(zijwortels) and root hairs.

SPECIALIZED PLANT CELLS:

- XYLEM CELLS

- PHLOEM CELLS

- ROOT HAIR CELLS

SPECIALIZED ANIMAL CELLS:

- RED BLOOD CELLS

- NERVE CELLS

- SPERM CELLS

- EGG CELLS

Tissue

Cells with the same shape en function form a tissue, such as muscle tissue, fat tissue or bone tissue

Muscle tissue

Muscle cells that can contract. 

Found in your muscles, but also in your heart 

and in your organs. 

make Qs 1 from your textbook
page 45