Types of Transport.

Slides:

Advertisements

Similar presentations

Homeostasis refers to the necessity of an organism to maintain constant or stable conditions. In order to maintain homeostasis, all organisms have processes.

Advertisements

Passive Transport. Healthy Cell 70% water 15% protein 10% fat 4% DNA and other materials 1% carbohydrate.

Structure and Function

Passive and Active Transport

Facilitated Diffusion Active Transport

Chapter 3. Passive Transport  Diffusion – molecules move spontaneously (no energy used) from an area of high concentration to an area of low concentration.

Cellular Transport. I. General A. Definition = molecules moving across the cell membrane B. Cell Membrane is selectively permeable (lets some things in,

Part 3: Homeostasis and Cell Transport (Chapter 5)

Cell Membrane What is it? – Barrier that separates cell from external environment – Composed of two phospholipid layers Other molecules are embedded in.

Active vs. Passive Transport FA Learning Goal: Compare and contrast active and passive transport.

Passive vs. Active Transport. Passive Transport Does NOT require energy Moves substances from higher to lower concentration.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Diffusion and Osmosis. KEY CONCEPT Materials move across membranes because of concentration differences.

Materials move across membranes because of concentration differences.

KEY CONCEPT Materials move across membranes because of concentration differences. 3.4 Diffusion and Osmosis.

6.3 Transport. What do you predict will happen if food coloring is dropped into a beaker of water? Where are the molecules most concentrated to start?

Cell transport 7.3. Key Questions 1.What is passive transport? 2.What is active transport?

KEY CONCEPT Cells use energy to transport materials that cannot diffuse across a membrane. 3.5 Active Transport, Endocytosis, and Exocytosis.

Cellular Transport Molecules moving across the cell membrane Cell Membrane is selectively permeable (lets some things in, some things out, but not everything)

Passive Transport Does not require The diffusion of __________

Essential Standard Bio.1.2 Analyze the cell as a living system.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Essential Standard Bio.1.2 Analyze the cell as a living system.

Notes: Cellular Transport

Structure and Function

Objective: You will be able to describe the structure and function of the components of the plasma membrane. Do Now: Read, “The cell membrane” on p. 182.

Cellular Physiology: Membrane Transport

Section 4 Cellular Transport

Diffusion and Osmosis

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.5 Active Transport, Endocytosis, and Exocytosis

There are two types of passive transport:

3.5 Active Transport, Endocytosis, and Exocytosis

3.5 Active Transport, Endocytosis, and Exocytosis

DO NOW Name the three particles in an atom and their associated charges? Where is the majority of the mass of an atom? Which particles compose this mass?

CELL MEMBRANES HELP ORGANISMS MAINTAIN HOMEOSTASIS BY CONTROLLING WHAT SUBSTANCES MAY ENTER OR LEAVE THE CELLS.

Diffusion and Osmosis.

How is the idea of equilibrium related to the cell membrane?

Cell Membrane Physiology

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.5 Active Transport, Endocytosis, and Exocytosis

3.5 Active Transport, Endocytosis, and Exocytosis

They are SEMI-PERMEABLE Selectively Permeable

3.5 Active Transport, Endocytosis, and Exocytosis

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Cell Transport.

3.5 Active Transport, Endocytosis, and Exocytosis

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Movement of particles across the cell membrane without using energy

3.5 Active Transport, Endocytosis, and Exocytosis

3.5 Active Transport, Endocytosis, and Exocytosis

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Transport through Membrane

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Cells and Their Environment

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.5 Active Transport, Endocytosis, and Exocytosis

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

3.5 Active Transport, Endocytosis, and Exocytosis

Active/Passive Transport Endocytosis/Exocystosis

Chapter 3, Part 2 Notes 3.4 Diffusion and Osmosis

Cell Transport Review.

Movement Through the Cell Membrane

3.4 Diffusion and Osmosis KEY CONCEPT Materials move across membranes because of concentration differences.

Presentation transcript:

Types of Transport

2 Different Types Passive Active No energy input to move substances Requires energy to move substances

Passive Transport Diffusion Molecules and ions can move across a membrane down their concentration gradient High concentration to low concentration 2 types Simple diffusion Unassisted (true of fats, oxygen, CO2) Osmosis: diffusion of water Facilitated diffusion Must have a protein to help them cross

Passive Transport Filtration Hydrostatic gradient Pressure moves the substances much like a hole in a water balloon squirts out water

Active Transport Solute Pumping Bulk transport Proteins use ATP to force substances where they need to be Bulk transport Into the cell: endocytosis Out of the cell: exocytosis