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level: Level 1 of Transport

Questions and Answers List

level questions: Level 1 of Transport

QuestionAnswer
Describe Osmosis• The movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane
Describe Diffusion and why its important to cellular function• The movement of molecules from an area of high concentration to an area of low concentration until they are evenly spread • This allows substances such as oxygen to enter a cell and waste products such as carbon dioxide to be removed. • Diffusion happens when the particles are free to move
Describe Active transport• Dissolved molecules moving across a cell membrane from a lower to a higher concentration. • Particles move against the concentration gradient and require an input of energy from the cell