Nature of Matter
When two atoms bond together, do they have the same properties as they did individually or do they have new properties?
new bond = new properties
What are the bonds between multiple water molecules
Hydrogen Bonds
Which 3 atoms are in all of the macromolecules?
C H O
What do enzymes do to chemical reactions?
Speed them up!
Gain or Loss of Electrons forms which type of bond?
Ionic
What are the bonds between the O and H's in a water molecule?
Covalent Bonds
Which macromolecule looks like a long chain instead of a ring arrangement?
What type of Macromolecules are enzymes?
Proteins
T or F: Oils, fats and waxes will repel water
true!
T or F: Water cannot dissolve ionic substances
false! It can!
Which macromolecule stores genetic information?
Nucleic Acids (DNA and RNA)
What is the molecule that bonds to an enzyme to activate it?
Substrate
2+
T or F: Water cannot mix with lipids because water is polar and lipids are nonpolar
true
What is the Monomer for Starch?
Glucose!
If we use an enzyme, what happens to the activation energy of the reaction?
the activation energy is lowered
What type of bond shares electrons instead of stealing or donating?
Covalent
What is the difference between cohesion and adhesion?
Cohesion: Water bonds to water
Adhesion: Water bonds to other substances
What is the structure that determines the different amino acids?
R-group
We need enzymes to digest food. What would happen if we did not have digestive enzymes?
We would not be able to break down food and get the nutrients we need!