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

Biology regents 2

Characteristics of living things/homeostasis

Autotrophs they make their own food
Heterotrophs they eat other oranisms
Photosynthesis carried out by plants. It takes radiant energy from the sun and puts it into sugar molecules. Occurs mostly in the chloroplasts of plant cells
stomates small holes in leaves to exchange gasses
guard cells they open and close the stomates
respiration organisms get energy by breaking the bonds of sugar molecules. The released energy is ATP
aerobic respiration this requires oxygen and yields more ATP (energy)
anaerobic respiration no oxygen is required to yield the ATP
Active Transport moving molecules from a low concentration to a high concentration
osmosis the diffusion of water into or out of the cell
diffusion the movement of molecules from high concentrations to low concentrations
stimulus a change in the environment that you respond to
neuron a nerve cell
impulse the electrical signal carried by nerves
hormone a chemical signal (insulin, adrenaline, testosterone)
receptor molecules proteins on the surface of the cell membrane that receive signals from the nervous system
Created by: beth weir



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