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.
Don't know (0)
Remaining cards (0)
Know (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

Bio Test

Vocab for bio test

Cell Theory 1. All living things are made of one or more cells. 2. Cells are the basic units of structure and function in organisms. 3. All cells arise from existing cells.
Cell Membrane Outer layer that encloses the cell and separates the outside of a cell from the cell interior.
Cytoplasm The material inside a cell.
Cytoskeleton Tiny fibers that hold cell organelles in place.
Ribosomes Cellular structures on which proteins are made
Prokaryote Single cell organism that lacks a nucleus and other internal compartments.
Cell wall Solid wall made of proteins and other nutrients that surround the cell membrane.
Flagella Long thread like structures that enable movement in cells.
Eukaryote An organism who's cells have a nucleus.
Nucleus An internal compartment that houses the cell's DNA.
Organelle A structure that carries out specific activities in a cell.
Cilia Short hair like structures that protrude from the surface of some Eukaryotic cells.
Phospholid A lipid made of a phosphate group and two fatty acids.
Lipid Bilayer In a cell membrane, the phospholipids are arranged in a double layer.
Golgi Apparatus A set of flat membrane bound sacs that serves as the packaging and distribution center of the cell.
Lysomes Small spherical organelles that contain one cell's digestive enzymes.
Mitochondria An organelle that harvests energy from organic compounds to make ATP, the primary cell energy.
Prokaryotic Cell Features No nucleus, has a cell wall, and has no internal structure.
Eukaryotic Cells Has a nucleus, does not have a cell wall, and has internal structure.
Diffusion The movement of a substance form a high area of concentration to a low are of concentration.
Osmosis The diffusion of water through cells.
Hypertonic Solution Solution has less density than cell
Isotonic Solution Solution has same density as cell
Hypotonic Solution Solution has a greater higher density than cell
Created by: Sean Keiley


Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then tap the card to flip it. If you knew the answer, tap the green Know box. Otherwise, tap the red Don't know box.

When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just tap 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