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17 Cards in this Set
- Front
- Back
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What is a nucleus' function? |
It controls everything in a cell and contains information to make new cells |
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What is the cytoplasm? |
A jelly like substance in which chemical recations in the cell take place |
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The chemical reactions in a cell are controlled by what? |
Enzymes |
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What does the cell membrane do? |
It gives the cell shape and controls what substance enter and leave the cell |
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What is made in ribosomes? |
Protiens |
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What does mitocondria do? |
Releases energy from resperation for the cells use |
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What is a cell wall made of and what does it do? |
It is made of cellulose and it strengthens the cell. |
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What are cloroplasts? |
They are found in the chloroplasm and absorb light energy to make food by photosynthesis |
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What is a vacuole? |
A large sac that contains cell sap |
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What are the diffrences between animal and plant cells? |
Plant cells: Have tough cell walls, pernament Vacoule and chloroplasts and is box shaped Animal cells: have no cell walls, some small vavoules that have no cell sap have no chloroplasts and the shape varies. |
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Name some specialised cells. |
Leaf paliside cells, root hair cells, xylem cells nerve cells sperm cells and red blood cells. |
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What is a group of cells that do the same thing called? |
A Tissue (bless you) |
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What is an organ? |
A group of tissues. |
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What is a organ system? |
A number of organs working together |
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What is diffusion? |
The movement of particles from a region of high concentration to a region of lower concentration unti they are equally spread out. |
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What is osmosis? |
The diffusion of water molecules from a dilute solution ta more concentrated one through a partially premebale membrane |
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Suggest two factors that increase the rate of diffusion. |
Concentration and temperature (or temperature and concentration however you like) |
