Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
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

AnP Ch 3 Part A

Chapter 3 Part A

Cell therory Cell is the structural and functional unit of life. Cells undergo Differentiation.
Extracellular Materials Body Fluids such as Blood Plasma fluid of the blood.
Plasma Membrane Consist of membrane lipids that form a flexible lipid bi-layer.
Membrane Proteins Float through this fluid membrane resulting in constantly changing patterns.
Membrane Lipids Phosphate heads are polar and are hydrophillic (water loving) Fatty acid tails are non polar and are Hydrophobic (water fearing).
Membrane Proteins Allow cell communications with environment. Make up half the mass of plasma membrane. float freely.
Integral Proteins Most are trans-membrane proteins (span membrane) Have both regions, function as transport proteins, enzymes or receptors.
Peripheral Proteins Loosely attached to integral proteins. Function as enzymes.
Glycocalyx Consist of sugars sticking out of cell surface. Functions as specific biological markers for cell-to-cell recognition.
Cell Junctions Some are free like blood and sperm cells. Can be bound by Tight Junctions, Desmosomes and Gap Junctions
Tight Junctions Integral proteins on adjacent cells fuse to form an impermeable junction that encircles whole cell.
Desmosomes Linker proteins (cadherns) of neighboring cells interlock like the teeth of a zipper. Allow give between cells reducing the possibility of tearing under tension.
GapJunctions Trans-membrane proteins (connexons) form tunnels that allow small molecules to pass from cell to cell. Used to spread ions, sugars or other small molecules. allows electrical signals to pass.
Passive Processes No energy required
Active Processes Energy (ATP) requried
Passive Transport Requires no energy. 2 types of this are Diffusion and Filtration
Diffusion Simple Diffusion, Osmosis and Facilitated Diffusion. Concentration Gradient. Lipid soluble and non polar substances. Very small molecules and large molecules assisted by carriers.
Filtration Usually occurs across capillary walls.
Facilitated Diffusion Hydrophobic molecules. are transported passivley down their concentration gradient.
Carrier- Mediated Facilitated Diffusion Substance bind to protein carriers. carriers are trans-membrane integral proteins.
Channel- Mediated Facilitated Diffusion Channels with aqueous filled cored are formed by trans-membrane proteins. Leakage Channels are always open. grated Channels are controlled by chemical or electrical signals.
Osmosis Movement of water across a selectively permeable membreane
Osmolarity Measure of total concentration of solute particles.
Hydrostatic Pressre Pressure of water inside cell pushing on membrane
Osmotic Pressure Tendency of water to move into cell by osmosis
Tonicity Ability of a solution to change the shape or tone of cells by altering the cells internal water volume.
Isotonic Solution Has same osmolarity as inside the cell so volume remains unchanged.
Hypertonic Solution Has higher osmolarity than inside cell so water flows out of cell resulting in cell shrinking. shriveling of cell.
Hypotonic Solution Has lower osmolarity than inside cell so water flows into cell resulting in cell swelling. Can lead to bursting of cell.
Created by: Jaytee07



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