Cells
Transcript of Cells
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