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7A Cells
Key words
| Term | Definition |
|---|---|
| Excretion | Getting rid of waste |
| Growth | Increase in cell size or cell number |
| Respiration | Oxygen + glucose carbon dioxide + water + ENERGY |
| Nutrition | Chemicals needed for respiration or growth |
| Organism | A single living thing |
| Reproduction | The creation of a new organism |
| Sensitivity | Detect changes in the environment |
| Bladder | Stores urine |
| Urine | Removes wastes especially nitrogen as urea |
| Diaphragm | Contracts down to fill lung, relaxes up to empty lung |
| Food pipe | Also called gullet, oesophagus |
| Heart | Pumps blood |
| Intestines | Small takes in nutrients, large takes in water |
| Kidneys | Removes wastes from the blood |
| Photosynthesis | Carbon dioxide + water + ENERGY oxygen + glucose |
| Liver | Destroys toxins in the blood, stores glucose |
| Lungs | Oxygen and carbon dioxide gas exchange by diffusion |
| Organ | Group of tissues working together to perform a function eg. skin, lung, heart |
| Rectum | Stores faeces |
| Root | Absorbs water and minerals |
| Skin | For protection, insulation, and sensitivity |
| Stem | Transports water and nutrients |
| Stomach | Physical and chemical digestion of food |
| Trachea | Also called wind pipe |
| Tissue | Group of similar cells working together |
| Fat tissue | Stores fat |
| Muscle tissue | Allows movement |
| Root hair tissue | Absorbs water |
| Xylem tissue | Transports water |
| Biopsy | Small tissue sample taken for examination |
| Coarse focusing wheel | Moves stage quickly for focusing under x10 lens only |
| Fine focusing wheel | Moves stage finely for focusing above x10 lens |
| Slide | Glass piece to lay specimen on |
| Coverslip | Glass cover on top of slide |
| Image | What you see down the microscope |
| Focus | Adjust to make image clear |
| Specimen | The object you are looking at |
| Eyepiece lens | The first lens you look down to see the objective lens |
| Objective lens | The lens closest to the specimen |
| Magnification | The increase in size ratio |
| Cell | The basic unit of life |
| Cell surface membrane | The layer that determines what goes in or out of a cell |
| Cell wall | Layer outside the cell membrane for support |
| Cellulose | Material that makes the cell wall of a plant cell |
| Chlorophyll | Green substance inside chloroplasts |
| Chloroplast | Organelle that contains chlorophyll for photosynthesis |
| Organelle | Group of chemicals that work as a small organ for a cell |
| Cytoplasm | The liquid inside the cell where chemical reactions take place |
| Mitochondria | The organelle where respiration for ENERGY takes place |
| Nucleus | The organelle that contains the DNA of the cell |
| Vacuole | A storage organelle |
| Blood vessel | Tube that carries blood |
| Organ system | A group of organs that work together to do a job |
| Breathing system | Organ system for oxygen and carbon dioxide exchange |
| Circulatory system | Organ system to transport oxygen, glucose, water, carbon dioxide and other substances |
| Digestive system | Organ system to that breaks down food to smaller molecules for absorption into the blood |
| Nerve tissue | Tissue made of nerve cells and other types of cells |
| Nervous system | Organ system for communication |
| Urinary system | Organ system that cleans blood and removes wastes |
| Water transport system | Organ system that carries water in a plant using xylem tissue |
| Organ transplant | Replacing an organ from one organism to another |
Created by:
andrewweng0406
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