Active Transport

Front

What is Active Transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy in the form of ATP.

Front

How do transport proteins function in active transport?

Back

Transport proteins change shape to push molecules through the cell membrane, allowing substances to move against their concentration gradient.

Front

What is an example of active transport in plants?

Back

The absorption of minerals from the soil by plant roots, where the concentration of minerals is higher in the roots than in the soil.

Front

What are the two main types of transport across cell membranes?

Back

Active transport and passive transport.

Front

What is the Sodium/Potassium Pump?

Back

A type of active transport that moves sodium ions out of the cell and potassium ions into the cell, crucial for maintaining cellular function.

Front

What is Endocytosis?

Back

A process by which cells engulf substances from their external environment, bringing them into the cell.

Front

What is Exocytosis?

Back

The process by which cells expel materials in vesicles, releasing them into the external environment.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required for transport proteins to change shape and move molecules against their concentration gradient.

Front

What is the concentration gradient?

Back

The difference in the concentration of a substance between two areas, which drives the movement of molecules.