Active Transport

Active Transport

Module 3B: Cell Transport & Processes

Learning Target

I can describe how active transport occurs across the cell membrane.

Lesson Guiding Question

• How does active transport move molecules across the cell membrane?

Cell Transport Review

Remember...

Cells must move materials across its membrane to maintain homeostasis ("balance").

​

Some materials move from high-to-low concentration without energy; this is called passive transport. ​

​

Module 3B: Cell Transport & Processes

Active Transport

Remember...

Sometimes, however, materials must be moved from low to high concentration. This is called active transport.​

​

Active transport requires energy (ATP) to move materials against the concentration gradient.​

​

Module 3B: Cell Transport & Processes

Open Ended

Explain how passive transport and active transport are different.

Active Transport

Active transport normally uses protein pumps.

​

These pumps allow for the movement of calcium, potassium, sodium, and other ions.​

​

​

Module 3B: Cell Transport & Processes

Active Transport

At other times, the cell will​ use its cytoplasm to move materials inside or outside of the cell.

​​

​These processes are called endocytosis (taking materials in the cell) & exocytosis (moving materials out of the cell).

Module 3B: Cell Transport & Processes

Multiple Choice

White blood cells surround damaged or foreign cells by surrounding and destryoing them in a process called phagocytosis. Is this an example of endocytosis or exocytosis?

• endocytosis

• exocytosis

Sum It Up

Write your summary.

Show it to Mr. Buie to receive credit for your notes.