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Animal cells

Chapter 4 Lesson 4

TermDefinition
Selectively permeable A property of cell membranes that allows some substances to pass through, while others cannot
Passive transport Remove me about materials through a cell membrane without using energy
Diffusion The process by which molecules move from an area of higher concentration to an area of lower concentration
Osmosis The diffusion of water molecules through a selectively permeable membrane
Active transport Development of materials through a cell membrane using cellular energy
Endocytosis Endocytosis is a vital cellular process where the cell membrane engulfs external substances (like nutrients, fluids, or pathogens) by folding inward, pinching off to form a membrane-bound vesicle that brings the material into the cell's interior
Exocytosis Exocytosis is the active cellular process where membrane-bound vesicles carrying substances fuse with the cell's plasma membrane, releasing their contents
How materials move in and out of cells Passive transport and active transport
The different types of membrane transport, and how each works Passive Transport: simple diffusion (small molecules down gradient) and osmosis (water movement). Active transport: using ATP directly, like ion pumps.
The difference between endocytosis and exocytosis Endocytosis brings things into the cell, while exocytosis expels things out.
The difference between facilitated diffusion and diffusion Diffusion moves small, non-polar molecules directly through the membrane, while facilitated diffusion uses transport proteins for larger, polar, or charged molecules.
Created by: user-1997209
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