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32 Cards in this Set
- Front
- Back
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What are all living things made of? |
Cells |
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What are the two different types of cells? |
Animal cells Plant cells |
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CELL SURFACE MEMBRANE |
This is like a very thin bag. It keeps the cell together and controls what goes into and out of the cells. |
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CELL WALL |
This is like a box with many large holes in it. It supports the cell and is very strong. It is made out of a substance called the cellulose. |
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NUCLEUS |
This is the control centre of the cell. It tells the cell what to do. |
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CHLOROPLASTS |
They are green discs that allows the plant to make food by photosynthesis. They contain a chemical called chlorophyll. |
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CYTOPLASM |
This is a jelly-like substance. Many of the cells activity take place here. |
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VACUOLE |
This is a storage space filled with a liquid called cell sap. |
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What is a microscope used for? |
CELLS are very small. A microscope is used to see them. |
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How to use a microscope? |
1. Place the smallest objective lens over the hole in the stage 2. Turn the focusing wheel to move the objective lens close to the stage 3. Place the slide on the stage 4. Adjust the light source or mirror 5. Look into the eyepiece lens 6. Turn the focusing wheel until what you see is clear (in focus) |
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SPECIMEN |
The object you want to look at in the microscope. |
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COVERSLIP |
Stops the specimen from drying out, holds it flat and stops it from moving. |
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CILATED EPITHELIAL CELLS |
They are found in the tubes leading to the lungs. The strands at the top (cilia) move to save dirt out of the lungs. |
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MUSCLE CELLS |
They are able to change length. This helps us to move |
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NERVE CELLS (neurons) |
They are long so that messages can be carried around the body quicker |
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ROOT HAIR CELLS |
Collect water from the ground and give the water more surface to get into the cell. |
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PALISADE CELLS |
They are packed with chloroplasts to help the plant make food. |
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TISSUE |
A group of cells that are all the same, all the same job is called a tissue |
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ORGAN |
A group of tissues working together to do an important job is an organ. |
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Examples of an organ |
The heart is an organ made of muscle tissue and nerve tissue. |
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BRAIN |
Controls the body |
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SKIN |
For protection and feeling |
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HEART |
Pumps blood |
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LUNGS |
For breathing |
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STOMACH |
Stores and breaks up food |
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LIVER |
Makes and destroys substances |
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LARGE INTESTINE |
Removes water from unwanted food |
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KIDNEY |
Cleans the blood and makes urine |
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SMALL INTESTINE |
Digests and absorbs food |
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STEM |
Carries substances (such as water) around the plant and holds the plant in place |
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LEAF |
Makes food by processing photosynthesis |
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ROOT |
Takes water out of the soil and holds the plant in the ground |
