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Cell Transport
Cells
Question | Answer |
---|---|
Unicellular | Organisms are made of one cell. Ex. Bacteria |
Multicellular | Organisms are made of many, many, many cells. |
Transport Proteins | Specifically shaped to allow essential molecules, such as water, into and out of the cell. |
Passive Transport | Some types of cell transport DO NOT require energy. |
Diffusion | Term used to describe the movement of molecules from areas of high concentration to areas of lower concentration due to random movement. |
Concentration Gradient | Term used to describe the difference between higher and lower concentration. |
Osmosis | Term used to specifically describe the movement of water across a membrane due to diffusion. |
Active Transport | Some types of transport do require energy. |
ATP | Cell uses a special kind of energy for this transport. |
Cellular Respiration | Converts sugar (produced in photosynthesis) to create ATP. |
Mitochondria | Use many enzymes to break down sugar (glucose) and store the energy in the chemical bonds of ATP. |
Chloroplasts | Filled with a pigment called chlorophyll. This pigment allows the cell to “gather” energy from light waves. |
Photosynthesis | Producers convert light energy to chemical energy. |
Aerobic Respiration | Requires the use of oxygen and makes a lot of ATP. |
Anaerobic Respiration | Takes place when no oxygen is available to the cell and produces very little ATP. |