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Biology
JC Science
| Term | Definition |
|---|---|
| Nutrition | the way an organism gets its food. |
| Respiration | the release of energy from food. |
| Excretion | the removal of waste matter from the body |
| Reproduction | the formation of new organisms |
| Response | reacting to changes in the surroundings |
| Invertebrates | animals that do not have a backbone. |
| Vertebrates | animals that have a back bones |
| Tissues | a group of similar cells which carry out the same function. |
| Cells | are what living things are made of |
| Organ | a structure that contains two or more tissues working together. |
| System | a number of organs working together |
| Digestion | the breakdown of food. |
| Chemical digestion | breakdown of food using enzymes |
| Physical digestion | breakdown of food using mechanical methods. |
| Enzyme | a protein that speeds up a reaction without being used up in the reaction. |
| Product | the substance produced as a result of the action of an enzyme |
| Substrate | the substance that an enzyme acts on |
| Microscope | used to view small objects in detail |
| Eyepiece lens | enlarges the image of the object |
| Focus knobs | allow a clear sharp image to be seen |
| Nosepiece | rotates so that different lenses can be used |
| Objective lens | located on the nose piece it enlarges the image of the object |
| Stage | the slide is placed on the stage for viewing |
| Mirror | used to shine a light source through the slide |
| Respiration | the release of energy from food |
| Aerobic Respiration | needs oxygen to release energy from food |
| Nose | cleans, warms and moistens air |
| Trachea | allows air to pass to and from the trachea |
| Bronchi | allows air to pass to and from the trachea |
| Bronchioles | allow air to pass to and from the alveoli |
| Alveoli | allows gas exchange |
| Diaphragm | cause the air to move in or out of the lungs |
| Plasma | liquid part of blood, transports chemicals and heat. |
| Red blood cells/Haemoglobin | transports oxygen |
| White blood cells | fights infections |