Questions and Answers
Why is membrane transport important?
To protect metabolic reactions within the cell from the environment
What is the role of transport proteins in the cell membrane?
Facilitate controlled interaction with the environment
What type of molecules have high permeability through the membrane?
Small hydrophobic molecules
What creates a hydrophilic passage for molecules in facilitated diffusion?
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What drives the movement of molecules across membranes?
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What is the net driving force for molecule movement across membranes?
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What is the main difference between active transport and passive transport?
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What is a common feature of transport proteins for active transport?
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In co-transport systems, which principle describes the movement of the driver ion and substrate in the opposite direction?
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How are ion channels different from carriers in passive transport?
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Which type of transporter is driven by the hydrolysis of ATP?
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How would you describe the role of protein pumps in establishing electrochemical gradients?
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