Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
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

Biology (JIN)

Section 3 vocab / important information

QuestionAnswer
1. What is the definition of "passive transport?" The movement of molecules across a cell membrane without energy input from the cell.
2. What is the definition of "diffusion?" The movement of molecules in a fluid or gas from a region of higher concentration to lower concentration.
3. What role does diffusion play? Small lipids and other nonpolar molecules, such as CO2 and O2, easily diffuse across the membrane.
4. What is the definition of "concentration?" The number of molecules of a substance in a given volume, and it can vary from one region to another.
5. What is the definition of " concentration gradient?" The difference in the concentration of a substance from one location to another.
6. What is one example of this? Tie-dye.
7. What is a isotonic solution? A isotonic solution has a solute concentration higher than the solute concentration inside the cell.
8. What is a hypertonic solution? A hypertonic solution has a solute concentration higher than the solute concentration inside the cell.
9. What is a hypotonic solution? A hypotonic solution has a solute concentration lower than the solute concentration inside a cell.
10. What is the definition of "facilitated diffusion?" The diffusion of molecules across a membrane through transport proteins.
11. What does facilitate mean? To make easier.
12. What are transport proteins? Transport proteins make it easier to enter or exit a cell. But the process is still a form of passive transport.
13. What is osmosis? A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution to a more concentrated one, thus equalizing the concentrations on each side of the membrane.
14.
15.
Created by: NegronJI
 

 



Voices

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:
Retries:
restart all cards