Chapter 7, Section 3 CELLULAR TRANSPORT

Overview of Lecture Passive Transport vs. Active Transport Types of Passive Transport Diffusion Facilitated diffusion Types of Active Transport Endocytosis Excytosis

What is cellular transport? Movement of molecules and ions across the selectively permeable membrane. Need to obtain nutrients

Passive vs. Active Transport Passive Transport: movement of molecules across the cell membrane without the use of energy. Molecules are moving from high concentration to low concentration. Active Transport: movement of molecules across the cell membrane with the use of energy (ATP). Molecules are moving from low concentration to high concentration.

Passive vs. Active Transport

In the picture below which scenarios are examples of passive transport? Write your answer on your notes!

Overview of Lecture Passive Transport vs. Active Transport Types of Passive Transport Diffusion Facilitated diffusion Types of Active Transport Endocytosis Excytosis

Types of Passive Transport Simple Diffusion: the movement of molecules across the cell membrane from high concentration to low concentration. Facilitated Diffusion: the use of protein channels to help move ions and large molecules across the cell membrane.

Facilitated Diffusion Osmosis: the movement of water across the plasma membrane through the process of diffusion. Hypertonic: the concentration of the solution surrounding the cell is high. Hypotonic: the concentration of the solution surrounding the cell is low. Isotonic: the concentration of the solution surrounding the cell is equal to the solution inside the cell.

Isotonic Solution Isotonic: the concentration of the solution surrounding the cell is equal to the solution inside the cell.

Hypertonic Solution Hypertonic: the concentration of the solution surrounding the cell is high.

Hypotonic Solution Hypotonic: the concentration of the solution surrounding the cell is low.

Osmosis Match pictures 1-3 with the correct type of solution the cell is surrounded by. Hypertonic Hypotonic Isotonic

Overview of Lecture Passive Transport vs. Active Transport Types of Passive Transport Diffusion Facilitated diffusion Types of Active Transport Endocytosis Excytosis

Active Transport Active Transport: movement of molecules across the cell membrane with the use of energy (ATP). Molecules are moving from low concentration to high concentration.

Active Transport What scenario below is demonstrating active transport? Write your answer in your notes! 1234

Types of Active Transport Endocytosis: The process of taking materials into the cell. Exocytosis: The process of large amounts of material leaving the cell.

Review Cellular Transport Active Transport Passive Transport Osmosis Hypertonic Hypotonic Isotonic Endocytosis Exocytosis