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Active Transport

Passive & Active Transport

QuestionAnswer
What substances are moved into and out of a cell through Passive Transport? Water through Osmosis, Lipids (fats), Lipid-soluble substances (Diffusion, sugars & amino acids
What are the characteristics of Passive Transport? No energy is needed, Substance flows with the gradient, Substance flows through a 'Channel Protein'
What does 'with the gradient' mean? The substance flows from high to low concentration.
Is Facilitated Transport a form of Passive Transport? Yes, Facilitated Transport a form of Passive Transport.
What substances are moved across the cell membrane through Facilitated Transport? Sugars & amino acids.
What does 'to facilitate' mean? To help or aid.
What kinds of proteins move substances through Facilitated Transport? 'Carrier' Transport proteins
Do substances move with or against the gradient in Facilitated Transport? With the gradient (from high to low concentration).
Is energy needed for Facilitated Transport? No energy is needed.
How does Facilitated Transport happen? Carrier proteins change their shape to help slightly larger molecules to move through the membrane.
How is Active Transport different from Passive Transport? Substances are moved against the gradient (from low to high concentration), Energy is needed, Carrier protein is used.
How does Active Transport happen? Carrier protein changes shape and uses ATP energy to move substances against the gradient.
What is Endocytosis? The process where a cell surrounds and takes in a substance that is too large to pass through the membrane (food).
Is energy needed for Endocytosis and Exocytosis? Yes, energy is needed.
What is Exocytosis? Cell uses energy to expel wastes or other substances that are too large to pass through the cell membrane 'gates'.
What does the prefix endo- mean? Inside.
What does the prefix exo- mean. Outside.
What substances are moved by simple Active Transport. Any substance that can pass through the membrane that is moved moved against the gradient.
What substances are moved into a cell by Endocytosis? Food, Bacteria, & other large particles
What substances are moved out of a cell by Exocytosis? Waste, hormones & other large particles.
Created by: 100001916589047
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