Plasma Membrane Transport

Question 0

What is passive transport

Answer 0

Any process by which substances enter or leave a cell that do not require the cell to expend its own energy

Question 1

What is diffusion

Answer 1

Spreading out of particles down a concentration gradient from an area of high concentration to an area of low concentration until uniformly distributed

Question 2

What is active transport

Answer 2

Any process of membrane transport in which a substance moves up its concentration gradient as a result of the cell expending its own energy usually but not always in the form of ATP

Question 3

What is concentration gradient

Answer 3

A region along which the concentration of a particular substance increases or decreases from one end to the other

Question 4

What is concentration

Answer 4

A measure of the abundance of a substance as a function of total volume within a mixture

Question 5

What is a integral proteins

Answer 5

A membrane protein that passes all the way through lipid bilayer of a membrane

Question 6

What is a peripheral protein

Answer 6

A membrane proteins that is loosely bound to the inner and outer surface of the membrane either Through a small hydrophobic region or connections to an integral protein embedded in the bilayer

Question 7

What is Solute

Answer 7

A substance that creates a solution when dissolved in a solvent

Question 8

What is a solvent

Answer 8

A substance that dissolves a solute to create a solution

Question 9

What is a Vesicle

Answer 9

A small bubble with in a cell a type of organelle that stores and transports cellar products and digest metabolic waste within cell

Question 10

What Is osmosis

Answer 10

The diffusion of water across a semi permeable membrane from an area of low solute concentration to an area of high solute concentration. the force exerted by water moving osmotically is called osmotic pressure

Question 11

What does is isotonic solution

Answer 11

Concentration of solutes are the same on both sides allows red blood cells to maintain shape

Question 12

What is the solution hypotonic

Answer 12

Lower concentration of solutes than the cystol inside red blood cells water enters faster than they leave causing the cell to shrivel

Question 13

What does a hypertonic solution

Answer 13

Higher concentration then the Cystol inside red blood cells. water moves out of cell faster than they enter. Causing the cell to explode

Question 14

What does the sodium potassium exchange pump do

Answer 14

3 sodium ions are expelled from cell and 2 potassiums are imported from cell per ATP

Question 15

What are leakage channels

Answer 15

Always open

Question 16

What are gated proteins

Answer 16

Open or closed. Holes in membrane only certain substances can pass through

Question 17

Carrier proteins

Answer 17

Binding changing shape to move molecule. Notes from high to low and membering