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8 Biology Revision
| Question | Answer |
|---|---|
| Cells: | The basic building blocks of all living things. |
| Cell theory | States that: All living things are made up of one or more cells. The cell is the most basic building block of living things. All cells are made from pre-existing cells. |
| Multicellular | Made of many cells |
| Unicellular | Made of one cell |
| Cell wall | An additional layer of protection around plant cells. They act like the skeleton of the plant . |
| Cell membrane | The ‘skin’ that holds the cell together. It controls what comes into and leaves the cell. |
| Chloroplast | Organelle within the cell where photosynthesis takes place |
| Cytoplasm | a watery, jelly-like mixture that contains many smaller parts where the work of the cell takes place |
| Mitochondria | The powerhouses of the cell where the energy is released from food |
| Nucleus | The control centre of a cell |
| Organelles | The smaller parts of a cell |
| Photosynthesis | Process used by plants to make food from water and carbon dioxide using energy from the Sun |
| Respiration | The series of chemical reactions that takes place in cells to release energy |
| Vacuole | Small structure in animal cells that may contain wastes or chemicals, or large sap-filled structure in plant cells that stores water, wastes and nutrients |
| Organ | A structure that contains at least two different types of tissues that work together to complete a task |
| Organ System | Two or more different organs that work together |
| Organism | An individual form of life that is capable of growing and reproducing, and can have one or more cells. |
| Tissue | Groups of cells that perform the same function in the body |
| Organ System | Two or more different organs that work together |
| Artery | A blood vessel that carries blood away from the heart |
| Capillary | The narrowest blood vessel that reaches nearly every cell of the body |
| Cardiac muscle | The type of muscle found in the heart |
| Circulatory system | The system that carries materials around the body; it consists of the heart, blood vessels and blood |
| Deoxygenated blood | Blood with carbon dioxide, low in oxygen |
| Haemoglobin | A pigment that gives red blood cells their colour |
| Oxygenated blood | Blood rich in oxygen |
| Vein | Blood vessel that carries blood back to the heart |
| Bronchi | Tubes formed by the division of the trachea |
| Bronchioles | Small tubes formed by the division of the bronchi |
| Diaphragm | A sheet of muscle that separates the chest from the abdomen |
| Pharynx | The cavity at the back of the nose, connecting the mouth and nose to the oesophagus |
| Respiratory system | The system of organs and tissues that takes the air into the body |
| Trachea | The tube that carries air from the nose and mouth into the chest cavity |
| Platelet | Component of blood responsible for clotting |
| Red blood cell | Component of blood which carries oxygen to cells |
| White blood cell | Component of blood which protect against infection and disease |
| Plasma | Liquid component of blood which carries dissolved nutrients and cellular components around the body |
| Ventricles | Lower chambers of the heart |
| Atria | Upper chambers of the heart |
| Aorta | Largest artery in the body, carries oxygenated blood out of the left ventricle |
| Bronchi | Tube which carries air into the left and right lungs |
| Bronchioles | Smaller tubes which branch off to take air to the alveoli in the lungs |
| Alveoli | Air sacs where gas exchange occurs |
Created by:
Natalie.Hastings