ACTIVE TRANSPORT Transport of Large molecules using energy

  • Slides: 12
Download presentation
ACTIVE TRANSPORT: Transport of Large molecules using energy ATP

ACTIVE TRANSPORT: Transport of Large molecules using energy ATP

Active Transport v. Requires energy or ATP v. Can move materials from LOW to

Active Transport v. Requires energy or ATP v. Can move materials from LOW to HIGH concentration v. AGAINST concentration gradient

ACTIVE TRANSPORT EXAMPLE #1: Proteins can pump molecules against the concentration gradient (flow). The

ACTIVE TRANSPORT EXAMPLE #1: Proteins can pump molecules against the concentration gradient (flow). The protein uses ATP energy to push the molecules where the cell NEEDS them to be, regardless of the concentration. Label the protein pump on your cell membrane!

ACTIVE TRANSPORT EXAMPLE #2: ENDOCYTOSIS Very large or bulk material (a lot at once)

ACTIVE TRANSPORT EXAMPLE #2: ENDOCYTOSIS Very large or bulk material (a lot at once) can be moved INTO the cell by a process called ENDOCYTOSIS. “en” like “enter” There are two forms: PHAGOCYTOSIS PINOCYTOSIS

Endocytosis – Phagocytosis Used to engulf large items (biomolecules or pathogens) or bulk by

Endocytosis – Phagocytosis Used to engulf large items (biomolecules or pathogens) or bulk by creating a vesicle. Called “Cell Eating”

Phagocytosis Capture of a Yeast Cell (yellow) by membrane extensions of an Immune System

Phagocytosis Capture of a Yeast Cell (yellow) by membrane extensions of an Immune System Cell, or white blood cell (blue)

Endocytosis – Pinocytosis Used to engulf large amounts of liquid by creating a vesicle.

Endocytosis – Pinocytosis Used to engulf large amounts of liquid by creating a vesicle. Called “Cell drinking”

ACTIVE TRANSPORT EXAMPLE #2: EXOCYTOSIS Very large or bulk material (a lot at once)

ACTIVE TRANSPORT EXAMPLE #2: EXOCYTOSIS Very large or bulk material (a lot at once) can be moved OUT the cell by a process called EXOCYTOSIS. “ex” like “exit”

Moving the “Big Stuff” Exocytosis - moving things out. Molecules are moved out of

Moving the “Big Stuff” Exocytosis - moving things out. Molecules are moved out of the cell by vesicles that fuse with the plasma membrane. This is how many hormones are secreted and how nerve cells communicate with one another

Exocytosis Exocytic vesicle immediately after fusion with plasma membrane.

Exocytosis Exocytic vesicle immediately after fusion with plasma membrane.

Active Transport Using energy Active Transport Transport methodsActive Transport Using energy Active Transport Transport methods
Active transport Active Transport Defined Molecules move fromActive transport Active Transport Defined Molecules move from
Active transport Active Transport Defined Molecules move fromActive transport Active Transport Defined Molecules move from
Active Transport Mechanisms Primary active transport Secondary activeActive Transport Mechanisms Primary active transport Secondary active
Cell Transport ACTIVE TRANSPORT Active transport Passive StandardCell Transport ACTIVE TRANSPORT Active transport Passive Standard
Active Transport Active Transport n Requires energy nActive Transport Active Transport n Requires energy n
Active Transport Active Transport Cellular energy is usedActive Transport Active Transport Cellular energy is used
Active Transport ATP ATP Using Energy ATP ActiveActive Transport ATP ATP Using Energy ATP Active
ORGANIC MOLECULES Macromoleculeslarge molecules Organic Molecules l FoundORGANIC MOLECULES Macromoleculeslarge molecules Organic Molecules l Found
Organic Molecules Organic Molecules Organic molecules are thoseOrganic Molecules Organic Molecules Organic molecules are those
Carbon and Organic Molecules Organic Molecules Organic moleculesCarbon and Organic Molecules Organic Molecules Organic molecules