Active transport for chapter 3 quiz

Three type of pumps in the plasma membrane

Uniport, Symport, and Antiport

Uniport

single subtance through one direction

Symport

two or more substances in same direction

Antiport

two or more sybstances in opposite directions (One goes out one goes in)

Primery active transport

Hydrolyzes ATP (removes phosphate) to change shape of pump

Example of primary active transport

Sodium - potassium pump that is antiport

What goes out of the cell with the sodium potassium pump

3 sodium

What goes into the cell with the sodium potassium pump

2 potassium

Secondary transport

Using a substance that is going down the concentration gradient to power the active transport of another substance

Pump used for secondary transport

symport pump

In secondary active transport what substances are used and which way are they going

1. Sodium and it goes down the concentration gradient

2. Glucose and it goes against the concentration gradient

Substances that need vesicular transport

Large polar macromolecules

Endocytosis

Engulfed into cell

Exocytosis

Out of cell

Three types of endocytosis

Phagocytosis, pinocytosis, and recepter mediated endocytosis

Step 1 of phagocytosis

Bacterium or dead cells bind to receptor

step 2 of phagocytosis

psuedopods extend and souround the bacterium

step 3 of phagocytosis

psuedopod turns into a vesicle called a phagosome

step 4 of phagocytosis

phagosome binds with a lysosome and substance in vesicle is digected

Step one of pinocytosis

fluid droplets are engulfed by protien coded pit

Step 2 of pinocytosis

transport protien is formed

Step 3 of pinocytosis

Transport vesicle loses protienc coat and fuses with endosome

Three different paths that could happen in step 4 of pinocytosis

1. vesicle returns to plasma membrane

2. vesicle is sent to a lysosome for digestion

3. vesicle exits the cell

Step 1 of exocytosis

transport vesicle binds with membrane

step 2 of exocytosis

vesicle’s phospolipid bilayer fuses with plasma membrane bilayer

step 3 of exocytosis

contents of transport vesicle are released into the extracellular matrix