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Chapter 4 ebowen

Active and Passive transport

QuestionAnswer
What is it called when water is moved into a cell? Hypotonic Solution
When a cell is placed in a hypertonic solution, what happens? water leaves the cell
What is the main difference between active and passive transport? Active transport does a major input in energy, passive transport doesn't
Example of active transport occurs in your nerve cells
Types of passive transport Diffusion
Why is the plasma membrane considered semipermeable? because of chemical composition
the process where a cell engulfs a macromolecule, forming a vesicle? Endocytosis
What is diffusion? Movement of molecules from an area of high concentration to area of low concentration; requires no energy
Explain the results of a sodium-potassium pump working across the membrane. moves sodium out of the cell and potassium into the cell, both against their concentration gradients.
does facilitated transport move a substance down or up a gradient Down
Created by: Emi Bowen
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