10 Questions
Which type of transport does not require energy for the movement of molecules?
Passive Transport
What are the three channels through which passive transport can happen?
Lipid bilayer, pore protein, and carrier protein
Which type of molecules can freely diffuse across a cell membrane through simple diffusion?
Small and uncharged molecules
What type of diffusion does not require the assistance of a transport protein?
Simple Diffusion
What is the primary driving force for the movement of substances during passive transport?
Concentration gradient
Passive transport requires energy for the movement of molecules
False
During passive transport, substances move against their concentration gradient
False
Simple diffusion requires energy or the assistance of a transport protein
False
Osmosis is a type of passive transport
True
Facilitated diffusion can assist the diffusion of larger or charged molecules across a membrane
True
Study Notes
Passive Transport
- Passive transport is a type of transport that does not require energy for the movement of molecules.
Channels of Passive Transport
- There are three channels through which passive transport can happen.
Simple Diffusion
- Small, uncharged molecules can freely diffuse across a cell membrane through simple diffusion.
- Simple diffusion does not require the assistance of a transport protein.
Characteristics of Passive Transport
- The primary driving force for the movement of substances during passive transport is their concentration gradient.
- During passive transport, substances move down their concentration gradient.
- Osmosis is a type of passive transport.
- Facilitated diffusion can assist the diffusion of larger or charged molecules across a membrane.
Test your knowledge of transport mechanisms in biology with this quiz. Explore the concepts of active and passive transport and their role in moving molecules across cell membranes. See how well you understand the differences and processes involved in these essential biological mechanisms.
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