ALICE CHERUBINI & MARTA SOAVE 2°DALICE CHERUBINI & MARTA SOAVE 2°D

INDICE:INDICE:* Introduction

* The Cells

* Specialised Cells

* Tissues

* Organs

* Organs Sistems

* Diffusion

* Osmosis

* Bibliography

There are two types of cells:

INTRODUCTIOINTRODUCTIONN

prokaryoticeukaryotic

1. Bacteria

2. archaea

1. protists,

2. fungi,

3. plants,

4. animals

THE CELLSTHE CELLS

1. All organisms are made of cells

2. Unicellular

3. Multi-cellular

4. Animal cells and plant cells

5. Diffusion

nucleus

cytoplasm

Cell membranemitochondria

ribosomes

Function of cells which animal and plant cells have in common

Plant cells also have extra parts: cell wall, chloroplasts, permanent vacuole

The different of animal and plant cells:

SPECIALISED CELLSSPECIALISED CELLSSpecialised animal cells

Red blood cells

Nerve cells

Female reproductive cell (egg cell)

Male reproductive cell (sperm cell)

Specialised animal cells

Root hair cell

Leaf cell

SPECIALISED CELLSSPECIALISED CELLS

TISSUESTISSUES

1. Muscle

2. The lining of the intestine

3. The lining of the lungs

4. Phloem (tubes that carry dissolved sugar around a plant)

5. Root hair tissue (for plants to take up water and minerals from the soil)

ORGANSORGANS

1. Heart

2. Lung

3. Stomach

4. Brain

5. Leaf

6. Root

ORGANS SISTEMSORGANS SISTEMS

1. Circulatory system

2. Respiratory system

3. Digestive system

4. Nervous system

5. Reproductive system

6. Leaf canopy

DIFFUSIONDIFFUSION

Diffusion: The movement of particles (molecules or ions) from an area of higher concentration to an area of lower

Examples of diffusion down concentration gradients Location Particles move From To

Gut Digested food products

Gut cavity Blood in capillary of villus

Lungs Oxygen Alveolar air space Blood circulating around the lungs

OSMOSISOSMOSIS

Water can move across cell membranes because of osmosis. For osmosis to happen you need:

• two solutions with different concentrations

• a partially permeable membrane to separate them

BIBLIOGRAPHYBIBLIOGRAPHY

Focus on Sciencehttp://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/cells/cells1.shtml