Membranes and Transport Review

Front

What does Hydrophilic mean?

Back

Water loving

Front

What does hydrophobic mean?

Back

Water fearing

Front

What is the Phospholipid bilayer?

Back

Two layers of

phospholipids

that create

a membrane

Front

What is diffusion?

Back

Movement of particles

from

low to high

concentration

Front

What is osmosis?

Back

Diffusion of water

across a

selectively permeable membrane

Front

What is an isotonic solution?

Back

A solution which has an equal

concentration of solutes

on both sides of a cell -

water moves back and forth equally

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solute relative to another solution or cell - water moves into the cell

Front

What is a hypertonic solution?

Back

A higher concentration of solutes

outside a cell -

water moves out of the cell.

Front

What is passive transport?

Back

Movement of materials through a membrane that doesn't require energy, moving from high to low concentration.

Front

What is facilitated diffusion?

Back

Movement of materials across a protein that doesn't require energy.