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

biology test review

cell theory all living things are made of one or more cells, two cells are the base units of structure are function in organisms, and all cells arise from other cells
cell membrane encloses the cell and separates the cell interior
cytoplasm the cell interior
cytoskeleton a structure of microscopic fibers
ribosomes the cellular structure on which proteins are made
prokaryote a single celled organism that lacks a nucleus and other internal compartments
eukaryote an organism whose cells have a nucleus
cell wall provides structure and support
flagella long threadlike structures that protrude from the cell's surface and enable movement
nucleus an internal compartment that houses the cell's DNA
organelle a structure that carries specific activities in the cell
cilia these protrude from the surface of some eukaryotic cells. These either propel some cells around their environment or move things across the surface of a cell
phospholipid a lipid made of phosphate in a group of fatty acids
lipid bilayer phospholipids arranged in a double layer
endoplasmic reticulum an extensive system of internal membranes that move proteins and other substances
vesticle a small membrane bound sack that transports substances in cells
golgi apparatus a set of flattened membrane bound sacks that serves as a packaging and distribution center
lysosomes small spherical organelles that contain the cell's digestive enzyme
mitochondria an organelle that harvests energy from organic compounds to make ATP
chloroplasts organelles that use light energy to make carbohydrates from carbon dioxide and water
central vacuole stores water and may contain many substances including ions, nutrients, and wastes
diffusion the movement of particles from a high density to a low density in and around the cell
osmosis the movement of water molecules or other solvents from high density to low density in and around the cell
molecular movements hypertonic, hypotonic, and isotonic
isotonic the density of solute and solvent is the same on the inside and outside of the cell
hypotonic the density on one side of the cell membrane is less dense
hypertonic the density on one side of the cell membrane is more dense
Created by: Gen.wey
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