Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Chapter 3 terms

QuestionAnswer
atom the smallest unit of matter that cannot be broken down by chemical means
element a substance made up of atoms that have the same number of protons
valence electron electrons in the outermost level or shell
compound a substance made of the bonded atoms of two or more different elements
molecule a group of atoms held together by covalent bonds
ion an atom or group of atoms that has an electric charge because it has gained or lost electrons
cohesion the attraction of particles of the same substance
adhesion attraction between particles of different substances
solution a mixture in which ions or molecules of one or more subbstances are evenly disturbed in another substance
acid compounds that form extra hydronium ions when dissolved in water
base compounds that form extra hydroxide ions when dissolved in water
pH a measure of how acidic or basic a solution is
buffer a substance that reacts to prevent pH changes in a solution
carbohydrate molecules made of sugars
lipid another class of biomolecules which includes fats phospholipids steriods and waxes
protein a large molecule made up of amino acids
amino acid building blocks that link to form proteins
nucleic acid a long chain of nucleotide units
nucleotide a molecule made up of three parts: sugar, a base, and a phosphate group
DNA nucleotides of deoxyribonucleic acid, contains sugar deoxyribose
RNA nucleotides of ribonucleic acids, contain sugar ribose
ATP cells need a steady supply of adenosine triphosphate
energy the ability to move or change matter
reactant a substance that is changed in a chemical reaction
product a new substance that is formed
activation energy the minimum kinetic energy that colliding particles need to start a chemical reaction
enzyme a molecule that increases the speed of biochemical reactions
active site the region where the reaction takes place
substrate the shape of the active site determines which reactants will bind to it
Created by: sundermank14
Popular Biology sets

 

 



Voices

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:
Retries:
restart all cards