10 Questions
What is the primary difference between simple diffusion and facilitated diffusion?
Facilitated diffusion involves transport proteins, whereas simple diffusion does not
In which direction does osmosis occur?
From an area of low solute concentration to an area of high solute concentration
What is the primary characteristic of active transport?
It requires energy in the form of ATP
Which of the following types of transport does not require energy?
Facilitated diffusion
What is the direction of molecule movement in simple diffusion?
From an area of high concentration to an area of low concentration
What is the primary function of transport proteins in facilitated diffusion?
To facilitate the movement of molecules across the membrane
What is the result of a concentration gradient on the movement of molecules in active transport?
The movement of molecules is hindered by the concentration gradient
What is the key difference between osmosis and facilitated diffusion?
The type of molecules being transported
In which type of transport process is the movement of molecules from an area of low concentration to an area of high concentration?
Active transport
What is the role of ATP in active transport?
To provide the necessary energy for transport
Study Notes
Types of Cellular Transport
- Simple Diffusion: Movement of molecules from high concentration to low concentration areas without energy or transport proteins.
- Characteristics: No energy required, no transport proteins involved, moves from high to low concentration.
Assisted Cellular Transport
- Facilitated Diffusion: Movement of molecules across the membrane via specific transport proteins, no energy required.
- Key feature: Involves transport proteins, but no energy is needed.
Water Transport
- Osmosis: Diffusion of water through a selectively permeable membrane from low solute concentration to high solute concentration areas.
- Direction: Water moves from low solute concentration to high solute concentration areas.
Energy-Dependent Transport
- Active Transport: Movement of molecules against their concentration gradient, requiring energy in the form of ATP and transport proteins.
- Key feature: Energy from ATP is required to move molecules against their concentration gradient.
Test your understanding of cell membrane transport mechanisms, including simple diffusion, facilitated diffusion, osmosis, and active transport. Learn how molecules and water move across the cell membrane with or without energy and transport proteins.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
