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14 Cards in this Set
- Front
- Back
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What is an organism? |
An organism is a complete living thing. |
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What is a cell? |
A cell is a tiny unit of living material surrounded by a thin membrane. |
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What is cytoplasm? |
Material in a cell. |
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What is a tissue? |
Tissue is a group of similar cells working together. |
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What the five characteristics of organisms? |
They can reproduce,they can grow, they are made up of cells, they require energy and they respond to their environment. |
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What does the cell theory states? |
All cells come from pre-existing cells,all living things are made of cells and of the products of cells, the functions of living things are performed by the cells they are made of. |
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Who was the man who used the word cell? |
Robert Hooke. |
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What are molecules? |
Particles. |
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What are carbohydrates? |
Made of carbon hydrogen and oxygen atoms. |
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What are proteins? |
Proteins our food storage molecules, other proteins fight disease and they are made up of smaller molecules called amino acids. |
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Nucleic acids? |
They are made up of group of smaller molecules the molecules that compose nucleic acids are called nucleotides. |
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What are the two major kinds of nucleic acids? |
DNA and RNA. |
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What are lipids? |
Fats. |
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List four categories of molecules found in cells? |
Carbohydrates nucleic acids lipids and proteins. |
