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Stack #757152
Biology - Investigating Cells
| Question | Answer |
|---|---|
| What is diffusion? | The movement of a substance from an area of hich conc. to an area of low conc. |
| Which subtances can move in and out of cells vis diffusion? | Dissolved food, Oxygen and Carbon Dioxide |
| What is diffusion? | The movement of a substance from an area of hich conc. to an area of low conc. |
| Which subtances can move in and out of cells vis diffusion? | Dissolved food, Oxygen and Carbon Dioxide |
| What is a concentration gradient? | The difference in concentration that exists between two regions and results in diffusion |
| What is osmosis? | The movement of water |
| What is diffusion? | The movement of a substance from an area of hich conc. to an area of low conc. |
| Which subtances can move in and out of cells vis diffusion? | Dissolved food, Oxygen and Carbon Dioxide |
| What is a concentration gradient? | The difference in concentration that exists between two regions and results in diffusion |
| What is osmosis? | The movement of water |
| What is diffusion? | The movement of a substance from an area of hich conc. to an area of low conc. |
| Which subtances can move in and out of cells vis diffusion? | Dissolved food, Oxygen and Carbon Dioxide |
| What is a concentration gradient? | The difference in concentration that exists between two regions and results in diffusion |
| What is osmosis? | The movement of water from an area of high water concentration to an area of low water concentration through a semi-permeable membrane |
| What will an plant cell do when placed in pure water? | Take on water by osmosis, swell up and become turgid |
| What will an animal cell do when place in pure water? | Take on water by osmosis, swell up and burst |
| What will happen to a plant cell when it is placed in a concentrated salt or sugar solution? | It will lose water by osmosis, the cell's contents will shrink and it will become plasmolysed. |
| What will happen to an animal cell when it is placed in a concentrated salt or sugar solution? | It will lose water by osmosis and shrink |
| What does the cell wall do when osmosis occurs? | Provides protection which stops it being badly affected by osmosis |
| When osmosis occurs, does the cell membrane off er the same protection as the cell wall does? | No |
| What is a cell? | The basic unit of living things |
| What is a unicellular organism? | An organism made of only one cell |
| What is a multicellular organism? | An organism made of many cells |
| One example of a stain | Iodine solution |
| What 3 basic parts make up an animal cell? | Cell Membrane, Cytoplasm,Nucleus |
| What 6 basic parts make up a plant cell? | Cell Membrane, Cytoplasm, Nucleus, Cell Wall, Chloroplasts, Vacuole |
| Job of the cell membrane? | Controls what enters and exits the cell |
| Job of the cytoplasm? | The site of chemical reactions within the cell |
| Job of the nucleus? | Controls the activities of the cell |
| Job of the cell wall? | Made of cellulose, gives plant cell its shape |
| Job of the chloroplasts? | Contain chlorophyll, absorbs sunlight |
| Job of vacuole? | Stores cell sap |
| What is mitosis? | The process in which the contents of the nucleus are copied. It is usually followed by cell division. |
| What are the five stages of mitosis? | Interphase, Prophase, Metaphase, Anaphase, Telophase. |
| What is a chromosome complement? | The total number of chromosomes a cell posseses. |
Created by:
GM654
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