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Page 1: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

ACTIVE TRANSPORT

Page 2: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

LEARNING GOALS

We need to understand the basic process of transport across a plasma membrane.

We are learning ...

To understand the difference between passive and active transport

Page 3: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Active Transport

Substances move from a region of low to high concentration

Molecules are going AGAINST the concentration gradient and require ENERGY

Nutrients like vitamins, glucose, and small proteins are taken in the cell in this process

Page 4: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Active Transport

Page 5: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

ENERGY: ATPATP: Adenosine Triphosphate

Usable energy for the cell that is used in active transport

created in the mitochondria through the process of cellular respiration

Page 6: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Active Transport Proteins

Molecules such as glucose are transported into the cell by means of a protein pump

Examples:1. Sodium Potassium Pump

2. Hydrogen ion Pump

Page 7: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Sodium-Potassium Pump

3 Sodium (Na+) ions are pumped out of the cell with the help of ATP

2 potassium (K+) ions are pumped in of the cell with the help of ATP

This pump ensures that nerve cells and muscle cells function properly by maintaining these concentration differences

Page 8: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

ANIMATION

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html
Page 9: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference
Page 10: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Bulk Transport

Large quantities of material need to enter and exit the cell via Bulk Transport

Use vesicles formed by the membrane to transport large quantities in and out of the cell

All types of bulk transport requires energy in the form of ATP

Page 11: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Formation of a Vesicle

Page 12: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

2 Types of Bulk Transport

1. Endocytosis – bringing large amounts of material inside the cell

2. Exocytosis – bringing large amounts of material out of the cell

Page 13: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Endocytosis

Engulfing substances inside of the cell

2 Types:

1. Phagocytosis – cell eating

2. Pinocytosis – cell drinking

Page 14: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Endocytosis

Page 15: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

ENDOCYTOSIS: Phagocytosis

transport of solids into the cell

The pseudopods (finger-like projections) enclose the material into a vesicle

Lysosomes fuse with the vesicle and digest the contents and release nutrients into the cytoplasm

Page 16: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

PHAGOCYTOSISEXAMPLE

White blood cells use phagocytosis to remove harmful bacteria from the blood and tissues

Page 17: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

ENDOCYTOSIS: PinocytosisTransport of fluids into the cell

The cell membrane engulfs a drop of extracellular fluid to release into the cytoplasm

Example: Pinocytosis brings cholesterol molecules into the cell

Page 18: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Endocytosis

Page 19: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Exocytosis

• bulk transport that releases material outside of the cell

Examples: • Insulin is released into the bloodstream• Protein packaging for transport out of cell

Page 20: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Exocytosis

Page 21: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference
Page 22: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Protein Packaging

Page 23: ACTIVE TRANSPORT. LEARNING GOALS We need to understand the basic process of transport across a plasma membrane. We are learning... To understand the difference

Animations of Passive & Active Transport!!

http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__phagocytosis.html

http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html
http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html
http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html
http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__phagocytosis.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__phagocytosis.html
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__phagocytosis.html

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