One of several forms of an element, each containing the same number of protons but a different number of neutrons
what is an isotope?
What is a covalent bond?
The building block of DNA and RNA
Nucleotides
An enzyme raises the temperature of a reaction, lowers the temperature of a reaction, raises the activation energy of a reaction, or lowers the activation energy of a reaction
What is lowers the activation energy of a reaction?
Atoms are made up of subatomic particles called:
What are protons, neutrons, and electrons?
Group of molecules that are hydrophobic and insoluble in water.
Lipids.
An attractive force that holds molecules of the same substance together.
What is cohesion?
The part of the nucleotide responsible for the way DNA stores its information
What is the nucleotide base?
A specific reactant an enzyme acts upon.
What is a substrate?
Found in the nucleus of an atom.
What are protons and neutrons?
Determines an unsaturated fatty acid molecule.
Double bonds between the carbons.
A lipid made from fatty acids that have no double bonds.
What is a saturated fat?
A solution with a pH of 5 is...
What is acidic?
Holds the two helixes of DNA together.
What are hydrogen bonds?
The property of water that allows towns around bodies of water to stay warmer at night than the desert.
What is heat capacity?
What happens when an atom loses and electron.
What is it becomes positively charged?
Nuts, fish, oils are sources of this organic molecule
Lipids
The energy needed to get reactions started.
What is activation energy?
A chemical bond formed when one or more electrons are transferred from one atom to another
What is an ionic bond?
These are what the "rungs" of a DNA model are made of.
Nucleotides
The 20 amino acids vary only in this.
What are side groups?
Subatomic particles of an atom that have the same number.
What are protons and electrons?
Determines the properties of a protein.
What are type, number, and order of amino acids linked together?
Two different molecules that have the same chemical formula.
What are isomers?
Positively or negatively charged atom (or group of atoms resulting from the transfer of electrons)
What is an Ion?
This is what the backbone of DNA is made of
A solution with a pH of 5 is...
Atoms of the same element have the same number of
What are protons?
This is the main energy storing molecule for many organisms
Carbohydrates