Biology Chapter 2 Study Guide
Nucleic Acids
DNA and RNA
Exothermic
Energy Being Released
Adhesion
Force of attraction between different kids of molecules
H+ Concentration
Hydrogen Ion
OH- Concentration
Hydroxide Ion
Lipid
Macromolecule made mostly from carbon and hydrogen atoms
Solution
Mixture that is the same throughout
Isotope
One of several forms of a single element, which contains the same number of portons but different numbers of neutrons
Macro Molecules
(Polymers) Large molecule made up of many monomers
Proteins
Amino Acids
Cohesion
Attraction between molecules of the same substance
Enzyme
Protein catalyst that speeds up the rate of specific biological reactions
Element
Pure substance that consists of entirely one atom
Monomer
Small or Single Molecule/Unit in a larger molecule
Molecule
Smallest unit of most compounds that displays all the properties of the compound
Compound
Substance formed by the chemical combination of two or more elements in definite proportions
Solutes
Substance present in lower concentration -Dissolves in solvent
Solvent
Substance present in the greatest concentration -dissolves other substances
Catalyst
Substance that speeds up the rate of a chemical reaction
Reactant
Substances changed by a chemical reaction
Product
Substances formed in chemical reaction
Atoms
The Basic Unit of Matter
Charges
The physical property of matter which is either positive or negative
Ionic Bond
Type of Bond formed when one or more electrons are transferred from one atom to another
Covalent Bond
Type of bond between atoms in which the electrons are shared
Nonpolar Molecule
a molecule which shares electrons equally and therefore, lacks oppositely charged ends
Saccharide
a simple sugar or combination of sugars; a carbohydrate
Organic Compound
any compound of carbon and another element or a radical
Subatomic Particles
are the particles smaller than an atom.
High Specific Heat
how much heat energy it takes to raise the temperature of a unit mass of a substance one degree.
Activation Energy
involved in chemical reactions releases energy or absorbes
Polar Molecule
one that has an element that is more electronegative, such as water.
