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

Unit 1b Science 9th

QuestionAnswer
Diffusion Molecules pass straight through the lipid bilayer of the membrane
Facilitated Diffusion Molecules need transport proteins, such as channel proteins or carrier proteins, to cross
The cell membrane was made of A phospholipid layer
The phospholipid layer has two parts The head and the tail
The head is polar so it's Hydrophilic
The tail is nonpolar so it's Hydrophobic
The tails are chains of what? Fatty Acids
The head is hydrophilic so it's Polar
The tail is hydrophobic so it's Nonpolar
Concentration gradient moves molecules from High to Low concentration
Cholesterol Tucked inside the membrane. It keeps the membrane flexible and prevents it from becoming too rigid or too runny
Integral Membrane Proteins Proteins that go all the way through the membrane from one side to the other. They act like tunnels or "channel proteins" so large molecules (like glucose) can cross into or out of the cell without needing energy
Peripheral Membrane Proteins Proteins attached only to one surface (inside or outside) of the membrane, rather than going all the way through
Glycoproteins Proteins that have carbohydrate chains (E) attached to them. They act like name tags or antennas to help cells identify each other and recognize specific molecules
Selective Permeability Membrane’s ability to allow SMALL molecules through and keeps LARGE molecules from passing through. Helps maintain HOMEOSTASIS
Passive Transport Energy NOT required to move with the concentration gradient
Active Transport Energy is required to move with or AGAINST the concentration gradient
Brownian Movement Is unorganized (no patterns) movement of substances due to the collisions of particles which results in the even distribution of molecules
Diffusion Movement of molecules from higher concentration to lower concentration
Examples of diffusion Oxygen and Carbon Dioxide
Dynamic Equilibrium The diffusion of particles continues to occur until the particles become evenly distributed
Concentration Gradient Is the difference in concentration of molecules from highest to lowest number of molecules
Passive transport is High to Low
Osmosis is active or passive Passive
Osmosis Diffusion of water through a cell membrane
Osmosis moves water from High to low
HYPERTONIC solution Higher concentration of solutes
HYPOTONIC solution Lower concentration of solutes
ISOTONIC solution Equal solute concentrations
Osmosis is really the facilitated diffusion of water into and out of the cell
How is water moved through the cell Aquaporins
Rate of Transport of size of molecules is large Decreases
Rate of Transport of size of molecules is small Increases
Rate of Transport of temp of molecules is hot Increases
Rate of Transport of temp of molecules is cold Decreases
Rate of Transport of concentration of molecules is high Increases
Rate of Transport of concentration of molecules is low Decreases
Endocytosis Taking in
Exocytosis Putting out
Active transports are Endocytosis/Exocytosis
Pinocytosis The cell folds its membrane inward to take in tiny droplets of surrounding liquid and dissolved nutrients ("cell drinking")
Phagocytosis The cell extends its membrane to engulf large, solid particles (like bacteria or cellular debris) to destroy or digest them ("cell eating")
Types of Endocytosis Pinocytosis (liquid) Phagocytosis (solid) Receptor-Aided/Mediated
Receptor-Aided/Mediated Gets cholesterol and carb chains so the membrane can have what it needs
Created by: gunn135h4nn0n
 

 



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