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


Energy from respiration

word equation for aerobic respiration? glucose + oxygen ----> carbon dioxide + water (+energy)
respiration takes place? mitochondria
number of mitochondria in a cell shows? how active it is
respiration's function? energy warmth build large molecules from smaller ones, e.g. protein synthesis
more oxygen needed during exercise because? muscles contract more
changes in circulatory system during exercise? heart rate increases arteries supplying blood to muscles dilate (widen), allowing more O2 to get to muscles, and takes CO2 away.
2 effects of exercise more regularly? heart and lungs become larger more efficient blood supply
if muscles work too hard they? become fatigued and don't contract efficiently
anaerobic respiration occurs when? not enough O2 is supplied to the muscles
aerobic respiration produces more energy than? anaerobic respiration
O2 is still needed after exercise to? break down lactic acid into water and CO2
muscle fatigue is caused by? lactic acid build up
anaerobic respiration is less efficient because? glucose is not completely broken down
word equation for anaerobic respiration? glucose ----> lactic acid (+energy)
Created by: duane.humphreys



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