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

Ch. 3

QuestionAnswer
atom the smallest unit of an element that maintains the chemical properties of that element
element a substance that cannot be seperated or broken down into simpler substances by chemical means
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 force that holds moelcules of a single material together
adhesion the attractive force between two bodies of different substances that are in contact with each other
solution a mixture in which ions or molecules of one or more substances are evenly distributed 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 is a measure of how acidic or basic a solution is
buffer a substance that reacts to prevent pH changes in solutions
carbohydrate molecules made of sugars
lipid another class of bimolecules, which include fats, phospholipids, steroids, and waxes.
protein a moleecule 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: a sugar, a base, and a phosphate group
DNA contain the sugar deoxyribose
RNA contain the sugar ribose
ATP cells need a steady supply of adenosine triphosphate
energy the capacity to do work
reactant a substance or molecule that participates in a chemical reaction
product a substance that forms in a chemical reaction
activation energy the minimum amount of energy required to start a chemical reaction
enzyme a molecule that increases the speed of biochemical reactions
substrate the shape of the active site determines which reactants will blind to it
active site the region where the reaction takes place
Created by: martinoa14
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