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Science
The cell
| Question | Answer |
|---|---|
| What are living things called? | Living things are called organisms. |
| What characters must organisms have? | To be considered a living thing,organisms must have the following characteristics: Movement,response,nutrition,respiration,growth,excretion,reproduction. |
| What is a unicellular organism? | A unicellular organism, is composed of only a single cell e,g bacteria. |
| What are multicellular organisms? | Multicellular organisms are organisms that are made of more than one cell e.g plants and animals. |
| What are cells? | Cells are the basic units of life,all living things are made up of cells. |
| What do cells do? | Cells work together to support different functions in a living organism. |
| What forms a tissue? | A group of cells working together form a tissue,e.g bicep muscle tissues are a group of cells that work together to move your forearm up. |
| What is tissue? | The lining of lungs,intestines,skin,and muscles are all examples of tissue, |
| What forms a organ? | Tissues work together to form a organ |
| What is a organ? | Our lungs,heart,brain,and stomach are all organs. |
| What forms a system? | Different organs working together forms a system,e.g disgestive system. |
| What makes up a living organism? | All of our systems working together make up a living organism. |
| What are specialised cells? | Specialised cells are cells that have adapted to carry out specific functions. |
| What is the mitochondria | The mitochondria is where energy is released from food through a process called respiration |
| What is the nucleus | The nucleus carries genetic information (DNA) and controls what happens inside the cdll |
| What is the Cytoplasm? | The cytoplasm is a jelly like substance where all the chemical reactions happen. |
| What is the cell membrane? | The cell membrane controls the movement of substances into and out of the cell. |
| What is the vacuole/large vacuole? | The vacuole contains a liquid called cell sap that stores food and keeps the cell firm,animal cells also contain vacuoles but they are very small. |
| What is the chloroplast? | The chloroplast is where the plant makes food using a process called photosynthesis.chloroplasts contains a green pigment called chlorophyll. |
| What is the cell wall? | The cell wall protects and supports the cell,it is made of a tough substance called cellulose. |
| What does a light microscope do? | A light microscope used a series of lenses to produce a magnified image of a object. |
| What is the slide? | The slide sits on the stage and is held in place by stage clips, |
| What does the light source do? | Light from the light source shines through the object |
| What is the eyepiece lens? | The eyepiece lens’s is closest to your eye,it magnifies the image. |
| How are images found and focused? | Images are found using the coarse adjustment knob and focused using the fine adjustment knob |
| Explain objective lens. | Each objective lens has a different magnification,these sit on a rotating nosepiece so that different lenses can be chosen. |
| What are stains and dyes used for? | Stains and dyes are used to enhance contrast in microscopic images,stains highlight features and make them easier to see. |
| What does the eyepiece lens and objective lens do? | Both of them magnify objects. |
| How do you calculate the total magnification? | Multiply the magnification of the eyepiece by the magnification of the objective lens . |
| Where is the magnification found? | It is found on each lens,it is a number follows by x such as 10x |
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