Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
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

Chapter 2

Chemistry of Life

TermDefinition
Nucleus central core of atom
Proton positively charged particle in nucleus
Neutron non-charged particle in nucleus
Atomic Number number of protons in the nucleus; determines type of atom
Atomic Mass number of protons and neutrons combined [protons+neutrons]
Energy Levels regions surrounding atomic nucleus that contain electrons
Electron negatively charged particle
Element a pure substance; made up of only one kind of atom
Molecule a group of atoms bound together in a group
Compound substances whose molecules have more than one kind of atom
Covalent Bonds when atoms share their outer energy to fill up and thus become stable
Examples of Inorganic Molecules water and some acids, bases, and salts
Water Essential to life
Dehydration Synthesis chemical reaction in which water is removed from small molecules and then strung together to form a larger molecule
Hydolysis chemical reaction in which water is added to the subunits of a large molecule to break it apart into smaller molecules
Acid substance that shifts the H+/OH- balance in favor of H+; opposite of base
Base substance that shifts the H+/OH- balance against H+; also known as an alkaline; opposite of acid
pH mathematical expression of relative H+ concentration in an aqueous solution
Neutralization acids and bases mix to form salts
Buffers chemical systems that absorb excess acids or bases and thus maintain a relatively stable pH
Body's Normal pH Level 7.35 - 7.45
Carbohydrates sugars and complex carbohydrates
Lipids fats and oils
Proteins Very large molecules made up of amino acids held together in long, folded chains by peptide bonds
Collagen a fibrous protein that holds many tissues together
Keratin forms tough, waterproof fibers in the outer layer of the skin
Catalysts help chemical reactions occur
ATP (adenosine triphosphate) a modified nucleotide used to transfer energy from nutrients to cellular processes, thus acting as an energy-transfer “battery"
Created by: TheLifeOfMJ
 

 



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