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

BJU Life Science 4

Bob Jones Life Science - Chapter 4

cell membrane The membrane that surrounds all the cytoplasm of a cell.
selectively permeable Allowing only certain molecules to pass through.
passive transport The passage of substances across a membrane without the use of cellular energy.
diffusion The movement of molecules from an area of higher concentration to an area of lower concentration; a form of passive transport.
osmosis The diffusion of water through a selectively permeable membrane.
active transport The passage of particles through a membrane, requiring the use of cellular energy.
cell wall A rigid structure manufactured by certain organisms and secreted to the exterior of the cell membrane; plants, fungi, and bacteria have cell walls.
organelle The parts of a cell that perform many of the functions needed to keep the cell alive.
mitochondria The cellular organelles in which aerobic respiration occurs to release usable energy from food.
endoplasmic reticulum A cellular organelle consisting of a network of membranes; enables substances to be transported throughout the cell.
ribosome A cellular organelle that directs the assembling of proteins.
Golgi apparatus A cellular organelle that collects chemicals from the cytoplasm, processes them, and secretes them.
vacuole A membrane-bound sac that contains various substances, including water and wastes, within a cell.
lysosome An organelle that contains digestive enzymes.
chloroplast A cellular organelle that contains chlorophyll and other pigments; the organelle in which photosynthesis occurs.
cilia Short hairlike extensions from a cell membrane; aid in movement.
flagella Long hairlike extensions from a cell membrane; aid in movement.
nucleus The cellular organelle that contains the chromosomes; control center of the cell.
chromosome A strand of DNA with associated proteins; usually found in the nucleus of a cell; the basis of heredity.
Created by: heidio



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