Biology Keystone Review #4

Name: _____________________________________

TOPIC 3: Cellular Transport

The following video podcast can guide you but is note required:

https://docs.google.com/file/d/0By3MFJ-zJlsYYWVTV1FhRjQ1dzg/edit?pli=1

What 4 types of organisms have a cell wall?

plants

bacteria

fungi

algae

Diffusion moves molecules form a ____high________ concentration to a ___low______ concentration.

True or false: after equilibrium is reached, molecules do not move anymore. FALSE

In a hypotonic solution, there is a low solute / high water concentration outside a cell. Water moves ____ the cell. into

Circle one: Who does better in a hypotonic solution? PLANTS ANIMALS

PLANTS

In a hypertonic solution, there is a high solute / low water concentration outside a cell. Water moves __OUT___ the cell.

In an isotonic solution, there is an _________ solute / water concentration outside and inside a cell.

Circle one: Who does better in an isotonic solution? PLANTS ANIMALS

ANIMALS

Facilitated diffusion needs the help of a ___carrier protein_______ to move large/charged molecules across a cell membrane.

What type of molecule is the “facilitator” in facilitated diffusion? _______protein______________________

The only type of cellular transport to go AGAINST the concentration gradient is called __________actve___________.

What important energy molecules allows active transport to happen? _________ions and glucose___________

What happens to the shape of the protein when the ATP binds to it? ______________changes it____________________

What happens to the shape of the protein when the potassium ions bind to it? ___________change again________________

In the Na+ K+ pump, _______ ions of sodium go through first. Then, _____ ions of potassium go through.

**DO THE QUIZ HERE: http://www.crsd.org/Page/32656. Type out the correct questions and answers below:

Molecules naturally...