Facilitated Diffusion

Slides:

Advertisements

Similar presentations

Active Transport Ch 8. It is possible for particles to travel in the reverse direction across the membrane and have particles travel from an area of ______.

Advertisements

Cell Functions What your cells do on a daily basis to keep themselves – and you – alive!

Movement through the channel

1 ACTIVE TRANSPORT ACROSS A MEMBRANE. Overview of Active Transport Active Transport 1. Carrier Protein 2. Endocytosis3. Exocytosis.

Active Transport pp. 67 to 71. We know that passive transport involves NO energy, but.... As living beings, we NEED energy to sustain life processes.

Passive and Active Transport

Active Transport Requires use of energy because it does not happen naturally through diffusion or facilitated diffusion. Requires a carrier protein* that.

Homeostasis and Cell Transport

Transport Passive and Active. Passive Transport  Passive transport is any transport that occurs without the use of energy.  Ex:  Diffusion  Osmosis.

Active Transport Overview Sometimes cells need to move substances from low concentration to high concentration These substances move up the concentration.

ACTIVE TRANSPORT Energy Used to Move Cellular Materials.

No energy is used [High]  [Low] (it’s the natural flow) This means it goes down a concentration gradient.

ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference.

Cell Transport Membranes Structure and Function. Membrane Structure Phospholipid Bi-layer Phospholipid Bi-layer Contains Different Types of Proteins Contains.

A. Active Transport a. Active transport is the transport of a substance across the cell membrane against its concentration gradient (from low to high.

Types of Cellular Transport  Passive Transport  Does NOT require energy cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis  Active.

Facilitated Diffusion and Active Transport. Facilitated Diffusion Many molecules and ions need special protein channels to pass through the cell membrane.

Facilitated Diffusion Active Transport

Do Now Use you notes to help you answer the questions. There is a quiz on this NEXT CLASS!

Getting In & Out of a Cell Osmosis & Diffusion Getting In & Out of a Cell Osmosis & Diffusion.

Active Transport. Moves molecules from low to high concentration AGAINST a concentration gradient Requires energy, so cell must use ATP.

Cell Transport Biology Unit 4 Notes #4 (Section 3.5)

Active Transport.

ACTIVE TRANSPORT This lesson meets the following DoE Specific Curriculum Outcome for Biology 11: 314-1, 314-3,

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.

TRANSPORT ACROSS CELL MEMBRANES Endocytosis and Exocytosis.

Homeostasis & Cell Transport

Active Transport Movement of materials through a membrane against a concentration gradient and requires energy from the cell. (ATP) Low Concentration.

Passive Transport vs. Active Transport. Remember that all cells have … Plasma or cell membranes that are selectively permeable and very fluid…

Active Transport *Solutes flow against the concentration gradient. * The cell uses energy…. ATP. *Requires Transport Proteins Types of Active Transport.

Homeostasis & Transport

Passive Transport Review

Cellular Transport Across the Membrane

3.5 Active Transport, Endocytosis, and Exocytosis

How is osmosis different from facilitated diffusion?

4/5 Wednesday’s Notes: Active Transport

Active Transport Using energy.

ACTIVE TRANSPORT Active transport – the transport of a substance across the cell membrane against its concentration gradient; because the movement of.

Homeostasis and Cell Transport

“Active” Cellular Transport

Chapter 4 Objectives Compare active transport with passive transport.

Active Transport.

Facilitated Diffusion vs. Active Transport

Passive Transport Review

Types of Cellular Transport

Active Transport Movement of materials through a membrane against a concentration gradient and requires energy from the cell. (ATP) Low Concentration.

Active Transport pp. 67 to 71.

Facilitated Diffusion

Protein Pump Exocytosis Endocytosis

ATP ATP Active Transport Using Energy ATP ATP.

Active transport.

Chapter 4 Objectives Compare active transport with passive transport.

Unit 4: Cells 4.5 Active Transport

Moving across a membrane

Facilitated Diffusion vs. Active Transport

Active transport.

Movement of substances through the cell membrane.

Active Transport.

Facilitated Diffusion

Active transport is the pumping ضَخ of solutes against their concentration gradients الإنحدار التركيزي Some facilitated transport proteins can move solutes.

Homeostasis and Cell Transport

Active transport.

Active Transport Chapter 7.3.

Cells and Their Environment

From Low to High Concentration

Chapter 3, Part 2 Notes 3.4 Diffusion and Osmosis

Homeostasis and Transport

Active transport.

Presentation transcript:

Facilitated Diffusion Active transport Facilitated Diffusion Active Transport Diffusion ATP Passive Transport

Active Transport Does this kayaker need to spend his energy in order to move?

Active Transport Defined: Molecules move from a LOW to a HIGH concentration Against (up) the concentration gradient ATP energy opens/closes protein channel ATP = Adenosine Triphosphate Acts like a pump for ions ATP

Active Transport Video

Contractile vacuole of a Paramecium The contractile vacuole pumps out the excess water. This is an example of active transport. Water diffuses into the Paramecium… . . . . . . . . . . . . . . . . . . . . . . Paramecium . . . . . . . . . . . Contractile vacuole . . . . . . . . . . . . . . . . . Paramecia live in watery environments… Lets zoom in… The contractile vacuole… contracts… to squirt excess water out If too much water diffuses into the Paramecium, it could burst and die… . . . . . . . Very similar to a bilge on a boat . . . . . . . . . . .

Endocytosis Endocytosis: Process in which the plasma membrane takes in substances (2 types) 1) Phagocytosis: when a cell engulfs a solid particle WBCs are called phagocytes 2) Pinocytosis: when a cell engulfs a liquid particle

Endocytosis & the lysosome The bacteria is engulfed by phagocytosis The bacteria is placed inside a lysosome are destroyed

Endocytosis Endocytosis: Process in which the plasma membrane takes in substances (2 types) 1) Phagocytosis: when a cell engulfs a solid particle WBCs are called phagocytes 2) Pinocytosis: when a cell engulfs a liquid particle Unfortunately, viruses can also enter our cells this way receptor virus virus virus virus DNA

Exocytosis Defined: Process when substances are expelled from the cell Proteins, nutrients, and waste exit by exocytosis Vesicles carry & release objects through the plasma membrane

Quiz How are active and passive transport different? Similar? Which molecule powers active transport? How are endo- and exocytosis similar? Different? Which cell part controls active transport? Once inside a cell, what actually kills bacteria that have been swallowed by endocytosis? During exocytosis, which organelle fuses with the cell membrane? What are the types of endocytosis?