Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
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

Chapter 3

QuestionAnswer
Valence electron an electron that is found in the outermost shell of an atom andthat determines the atom's chemical properties
Chemical bond the ATTRACTIVE force that holds atoms or ions together
Compound a substance made of the ATOMS of TWO or more different ELEMENTS joined by CHEMICAL BONDS
Covalent bond a bond formed when ATOMS share ONE or more PAIRS OF ELECTRONS
Molecule a GROUP OF ATOMS HELD TOGETHER by CHEMICAL forces, a SMALLEST UNIT OF MATTER that can exist by itself and retain al of a substance's chemical properties
Ion an atom or GROUP OF ATOMS that was an electric charge because it has GAINED OR LOSTED ELECTRONS
Hydrogen bonding can play an important role in many of the molecules that MAKE UP LIVING THINGS
Latent heat can cut organisms maintain a constant internal temperature
Cohesion the force that holds molecules of a single material together
Adhesion the attractive force between two bodies of different substances that are in contact with each other
Solution a homogeneous mixture throughout which two or more substances are uniformly dispersed
pH a value that is used to express the acidity of a system
Buffer a solution made from a weak acid and its conjugate base that neutralize small amounts of acids added to it
Base any compound that increase the number of hydroxide ion when dissolved in water
Acids any compound that increase the number of hydronium ions when dissolved in water
Carbohydrates a class of molecules that are mode of sugars
Lipid a fat molecules that has the similar properties
Protein an compound made of one or more chains of amino acids
Amino acid a compound of a class of simple compounds
Nucleic acid a long chain of nucleotide units
Nucleotide a molecule made up of three parts
DNA the material that contains the information that determines inherited traits
RNA all living cells that plays a role in protein sythesis
ATP the main source for cell processes
Enzyme a molecule that acts as a catalyst in reactions
Atom the smallest unit of matter
Element a substance that cannot be separated into simpler substances by chemical means
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
Substrate The reactant in reactions catalyzed by enzymes
Active site The site that attaches to a substrate on an enzyme
Created by: Victoria718