Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

vocab 4

unit 1 vocab 4 test

QuestionAnswer
cell membrane protects the cell and regulates what enters and leaves the cell
polar phosphate head that faces the outsides and insides of cell, freely interacting with water
non-polar fatty acid tails, attached to phosphate head that remain facing the inside of the cell membrane, avoiding water in and out of the cell
hydrophobic scared of water
hydrophilic water loving
fluid mosaic flexible lipid bi-layer with proteins embedded
simple diffusion small molecules like oxygen, water, and carbon dioxide can move thru the lipid bi-layer fro high to low concentration
facilitated diffusion molecules that travel from high to low, thru channel protein
semi-permeable lets SOME things pass through
equilibrium concentration is the same throughout the system
active transport uses ATP energy to move molecules across the membrane
passive transport does not require energy to move molecules across the membrane
channel protein protein that allows certain molecules to pass in and out of cell, from high to low concentration
protein pump protein that allows specific molecules in and out cell, from low to high concentration, uses ATP
Created by: flores.angela