Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Chp. 5 Vocab

QuestionDefinition
1. passive transport the movement of substances across a cell membrane without the use of energy by the cell
2. diffusion the movement of particles from regions of higher density to regions of lower density
3. concentration gradient a difference in the concentration of a substance across a distance
4. equilibrium in biology, a state that exists when the concentration of a substance is the same throughout a space
5. osmosis the diffusion of water or another solvent from a more dilute solution (of a solute) to a more concentrated solution (of the solute) through a membrane that is permeable to the solvent
6. hypotonic describes a solution whose solute concentration is lower than the solute concentration inside a cell
7. hypertonic describes a solution whose solute concentration is higher than the solute concentration inside a cell
8. isotonic solution a solution whose solute concentration is equal to the solute concentration inside a cell
9. contractile vacuole in protozoans, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure
10. turgor pressure the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell
11. plasmolysis the contraction or shrinking of the cell membrane of a plant cell in a hypertonic solution in response to the loss of water by osmosis
12. cytolysis the bursting of a cell
13. facilitated diffusion the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins
14. carrier protein a protein that transports substances across a cell membrane
15. ion channel a pore in a cell membrane through which ions can pass
16. active transport the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy
17. sodium-potassium pump a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell
18. endocytosis the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
19. vesicle a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell
20. pinocytosis a method of active transport across the cell membrane in which the cell takes in extracellular fluids
21. phagocytosis the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food
22. phagocyte a cell that ingests and destroys (digests) foreign matter or microorganisms
23. exocytosis the process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out
Created by: sgcook123
Popular Biology sets

 

 



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