Difference between revisions of "Cell (Biology)"
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: '''Cells''' cannot be seen with the naked eye. You need a [[microscope]] to see them. | : '''Cells''' cannot be seen with the naked eye. You need a [[microscope]] to see them. | ||
: Every living thing is made of '''cells''' but not all '''cells''' are the same. | : Every living thing is made of '''cells''' but not all '''cells''' are the same. | ||
| − | + | '''Cells''' are made of smaller parts: | |
*[[Cell Membrane]] - Controls what goes in and out of a cell. | *[[Cell Membrane]] - Controls what goes in and out of a cell. | ||
*[[Cell Wall]] - Protects cell and keeps their shape. | *[[Cell Wall]] - Protects cell and keeps their shape. | ||
Revision as of 09:03, 5 September 2018
Key Stage 3
Meaning
A cell is the smallest living part of all living things.
About Cells
- Cells cannot be seen with the naked eye. You need a microscope to see them.
- Every living thing is made of cells but not all cells are the same.
Cells are made of smaller parts:
- Cell Membrane - Controls what goes in and out of a cell.
- Cell Wall - Protects cell and keeps their shape.
- Chloroplasts - Produces food for a cell using photosynthesis.
- Cytoplasm - A jelly-like substance where chemical reactions take place.
- Mitochondria - Where respiration takes place.
- Nucleus - Controls the activities of the cell and contains the DNA.
- Permanent Vacuole - Stores cell sap.
- Plant Cells and Animal Cells made of some different parts.
- All cells have cytoplasm and a cell membrane
- Both Animal Cells and Plant Cells have a nucleus and mitochondria.
- Only Plant Cells have chloroplasts, a cell wall and a permanent vacuole
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Examples
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| The cells in an onion stained blue. | Muscle cells stained pink. | A single celled organism called a Euglena that is green because of the chlorophyll inside. |
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| 4 White blood cells stained purple surrounded by several red blood cells. | Several different types of plant cell found in a leaf. | Sperm cells stained purple and shown under a microscope. |