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7th grade Cells part
The characteristics of a cell
| Question | Answer |
|---|---|
| Cell | smallest functional and structural unit of all living organisms |
| organism | any living thing |
| Who was the first person to describe cells? | Robert Hooke |
| any living thing | organism |
| smallest functional and structural unit of all living organisms | cell |
| All organisms are made up of? | cells |
| Why are cells small? | their size is limited by their outer surface area |
| What is the Cell theory? | all organisms are made up of one or more cells the cell is the basic unit of all organisms all cells come from existing cells |
| What 3 scientist discovered the cell theory? | Schleiden, Schwann, and Virchow |
| unicellular organisms | organisms made up of just one cell |
| organisms made up of just one cell | unicellular organisms |
| multicellular organisms | organisms made up of more than one cell |
| organisms made up of more than one cell | multicellular organisms |
| what is the basic unit of all organisms? | cell |
| what is the basic unit of all living things? | cell |
| where do cells come from? | existing cells |
| What parts do all cells have in common? | cell membranes, cytoplasms, organelles and DNA |
| cell membrane | protective layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment |
| cytoplasm | the region enclosed by the cell membrane that includes the fluid and all of the organelles of the cell |
| organelles | a small body in a cell's cytoplasm that is specialized to perform a specific function. |
| DNA | genetic material that provides instructions for all cell processes |
| nucleus | a membrane bound organelle that contains the DNA |
| a membrane bound organelle that contains the DNA | nuleus |
| prokaryotes | single celled organism that does not have a nucleus or membrane bound organelles |
| where is the prokaryotic DNA located? | cytoplasm |
| ribosomes | organelles that do not have a membrane |
| flagella | hairlike structures that help prokaryotes move |
| Eukaryotic | an organism made up of cells that contain their DNA in a nucleus |
| animals, plants, protists, and fungi are? | eukaryotes |
| multicellular organisms are | eukaryotes |
| The _______ is the smallest functional and structural unit of all living things | cell |
| All cells are surrounded by a | cell membrane |
| A living thing is called an | organism |
| Describe 2 ways that all cells are alike? | They have cell membranes. They have cytoplasms. They have organelles. They have DNA |
| What are the main ideas of the cells theory? | all organisms are made up of one or more cells the cell is the basic unit of all organisms all cells come from existing cells |
| How do prokaryotes differ from Eukaryotes? | prokaryotes do not have a nucleus the eukaryotes do |
| How are prokaryotes and Eukaryotes similar? | They both have DNA |
| How is the structure of a unicellular organism different than the structure of a multicellular organism? | unicellular cells are only made up of one cell multicellular organisms are made up of more than one cell |
| How does the difference in unicellular and multicellular organisms affect their function? |
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