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21 Cards in this Set
- Front
- Back
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What are cells? |
All living organisms are made out of millions of units called cells |
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What are the 8 common life processes |
Require Nutrition Respond Reproduce Respire Excrete Grow and develop Move Control |
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What are unicellular organisms? |
Organisms made out of single cells |
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Give an example of organism which doesn't have a nucleus |
Red blood cells |
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What are organelles? |
They are tiny microscopic structures which consists inside the cell |
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What are the 4 main organelles present in each and every cell? |
Nucleus Cell membrane Cytoplasm Mitochondria |
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What is the nucleus? |
The largest organelle in the cell |
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What is it's function? |
Controls activities of the cell |
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What does it contain? |
It contains chromosomes which carry genetic material (genes) |
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What are genes? |
Sections of DNA which codes for a particular protein |
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How do they control the activities of he cell? |
By determining which proteins the cell can make |
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What is the function of enzymes in cells? |
They control chemical reactions which go into the cytoplasm |
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What is the cytoplasm? |
The living material which makes up the cell |
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Many ____________ take place in the __________ |
Chemical reactions Cytoplasm |
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What is the cell membrane? |
It is the thin skin like layer found on the surface of the cell |
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Give 2 functions of it |
It holds the cell together Controls materials which go in and out if the cell |
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What is the function of mitochondria? |
It uses glucose from respiration to supply cells with energy |
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What is the smallest organelle in an organism? |
Ribosomes |
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What is the function of them? |
They build up proteins |
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What are the 3 organelles only found in the plant cell? |
Cell wall Chloroplasts Vacuole |
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What is the cell wall? |
It is a layer of non living material found outside the cell membrane |
