Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, moving along the concentration gradient.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy input, moving against the concentration gradient.

Front

How are secreted proteins transported across the cell membrane?

Back

Secreted proteins are moved across the membrane through bulk transport mechanisms, such as exocytosis.

Front

What role do microtubules play in cellular transport?

Back

Microtubules provide the structural pathway for vesicles to move towards the cell membrane during transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that utilizes transport proteins to help move substances across the cell membrane.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of substances during passive transport.

Front

What is exocytosis?

Back

Exocytosis is a process where cells expel materials in vesicles that fuse with the plasma membrane, releasing their contents outside the cell.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells internalize substances by engulfing them in a vesicle formed from the plasma membrane.

Front

What are transport proteins?

Back

Transport proteins are integral membrane proteins that assist in the movement of ions and molecules across the cell membrane.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane, moving from an area of lower solute concentration to an area of higher solute concentration.