Podcast
Questions and Answers
Which type of transport does not require energy for the movement of molecules?
Which type of transport does not require energy for the movement of molecules?
- Facilitated Diffusion
- Active Transport
- Passive Transport (correct)
- Osmosis
What are the three channels through which passive transport can happen?
What are the three channels through which passive transport can happen?
- Facilitated channels, active channels, and passive channels
- Lipid bilayer, pore protein, and carrier protein (correct)
- Voltage-gated channels, mechanically-gated channels, and ligand-gated channels
- Gated channels, ion channels, and ligand-gated channels
Which type of molecules can freely diffuse across a cell membrane through simple diffusion?
Which type of molecules can freely diffuse across a cell membrane through simple diffusion?
- Small and uncharged molecules (correct)
- Small and charged molecules
- Large and uncharged molecules
- Large and charged molecules
What type of diffusion does not require the assistance of a transport protein?
What type of diffusion does not require the assistance of a transport protein?
What is the primary driving force for the movement of substances during passive transport?
What is the primary driving force for the movement of substances during passive transport?
Passive transport requires energy for the movement of molecules
Passive transport requires energy for the movement of molecules
During passive transport, substances move against their concentration gradient
During passive transport, substances move against their concentration gradient
Simple diffusion requires energy or the assistance of a transport protein
Simple diffusion requires energy or the assistance of a transport protein
Osmosis is a type of passive transport
Osmosis is a type of passive transport
Facilitated diffusion can assist the diffusion of larger or charged molecules across a membrane
Facilitated diffusion can assist the diffusion of larger or charged molecules across a membrane
Flashcards
Passive Transport
Passive Transport
Movement of molecules across a membrane without energy input.
Simple diffusion
Simple diffusion
Molecules move through the lipid bilayer without help.
Concentration Gradient
Concentration Gradient
Difference in concentration of molecules across a membrane.
Facilitated diffusion
Facilitated diffusion
Signup and view all the flashcards
Lipid Bilayer
Lipid Bilayer
Signup and view all the flashcards
Pore Protein
Pore Protein
Signup and view all the flashcards
Carrier Protein
Carrier Protein
Signup and view all the flashcards
Osmosis
Osmosis
Signup and view all the flashcards
Energy for Passive Transport?
Energy for Passive Transport?
Signup and view all the flashcards
Passive Transport Direction
Passive Transport Direction
Signup and view all the flashcards
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
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.
