Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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

Chapter 7

Membrane Structure & Function BSC1010

The term for membranes which allow some molecules to pass through while blocking passage of other molecules. Selective Permeability
Another name for passive transport. Facilitated Diffusion
Equal solute concentrations. isotonic
When the solute concentration is less. Hypotonic
Small sacs (circles) of membrane are called _______. vesicles
This is the diffusion of water. Osmosis
Which region of the phospholipid molecule is hydrophyllic? The Glycerol Head
Is it the proteins or the fatty acid tails which are responsible for giving the "Fluid Mosaic Model" of the plasma membrane its MOSAIC portion of the name? The insertion of the proteins.
A cell with an internal salt concentration of 0.1% salt is placed in a solution of 2% salt solution. Is the solution surrounding the cell considered hypotonic or hypertonic? The solution surrounding the cell is considered hypertonic .
Does diffusion move molecules down or up the concentration gradient? Down
The process a cell uses to bring particles into the cell by pinching off a small circle of membrane to form a vesicle enclosing the particles. Endocytosis
In a solution consisting of salt dissolved in water, which is the solute? salt
Which region of the phospholipid molecule is hydrophobic? Fatty Acid Tails
When the solute concentration is greater. Hypertonic
This method of moving molecules across the membrane uses proteins embedded in the membrane, and uses ATP energy to move molecules against (up) the concentration gradient. Active Transport
A cell with an internal salt concentration of 0.1% salt is placed in a solution of 2% salt solution. Which way will water move, into or out of the cell? Out of the cell.
This method of moving molecules across the membrane uses proteins embedded in the membrane, but does not use ATP energy. It also moves molecules down the concentration gradient. Passive Transport
Is the glycerol head of a phospholipid molecule polar or non-polar? Polar
The process whereby vesicles fuse with the plasma membrane and are able to "dump" the contents to the outside of the cell. Exocytosis
Created by: mikec35-pbsc
Popular Biology sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards