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


What are enzymes? proteins that catalyze chemical reactions.
How do enzymes work? By lowering the activation energy.
All of the work being done inside any cell is being done by: Enzymes.
What is Oxidation? the loss of an electron (or hydrogen).
What are Autotrophs? Organisms that synthesize their own nutrients; include some bacteria that are able to synthesize organic molecules from simpler inorganic compounds.
What are Heterotrophs? Organisms that obtain their nutrition by breaking down organic molecules in foods; include animals and fungi.
What is Anabolism? the total series of chemical reactions involved in synthesis of organic compounds.
What is Catabolism? the series of chemical reactions that breakdown larger molecules.
What is Homeostasis? The ability to maintain a relatively constant internal environment.
What is Energy Activation? The minimum amount of energy required for a given reaction to occur; varies from reaction to reaction.
What are Co-enzymes? Chemicals required by a number of enzymes for proper functioning; also known as enzyme co-factors.
What is Reduction? The gain of an electron or a hydrogen atom. The gain of electrons or hydrogen's in a chemical reaction.
What is Glycolysis? The universal cellular metabolic process in the cell's cytoplasm where 6-carbon glucose is split into two 3-carbon pyruvate molecules, and some ATP and NADH are produced.
What is the substrate? The biological molecule that the enzyme will attack.
The enzyme grabs onto the substrate with a special area called: The active site
What is the active site? A specially shaped area of the enzyme that fits around the substrate.
What is the Active site sometimes called? The keyhole of the lock.
What is Catalysis? When the substrate is changed.
What do enzymes do? Complete very specific jobs and do nothing else.
Enzymes are: Proteins.
What binds to the active site of an enzyme? A substrate.
True or false, An enzyme can only bind one reactant at a time. False.
True or false, An enzyme speeds up a chemical reaction in the cell, but can only be used once. False.
What are substrates converted into? Products.
What also catalyzes reactions? A few RNA molecules called ribozymes.
Created by: lydiajanetaylor
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