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Unit 1

AP Biology Unit 1 Vocabulary

adhesion clinging of a substance to another which helps counter the downwards pull of gravity
cohesion hydrogen bonds holding the the substance together
hydrogen bond hydrogen bonding to another electronegative oxygen
polar species in which has an unequal sharing of electrons
surface tension measure of how difficult it is to stretch or break the surface of a liquid (related to cohesion)
atom the smallest unit of matter that retains the properties of an element
essential element a chemical element required for an organism to survive, grow. and reproduce
macromolecule giant molecule formed by the joing of smaller molecules, usually by a dehydration reaction (polysaccharides, proteins, and nucleic acids)
cleavage process of cytokinesis in animal cells, characterized by piniching of the plasma membrane
dehydration synthesis
hydrolysis chemical reaction that breaks bonds between two molecules by the addition of water; functions in disassembly of polymers to monomers
monomer the subunit that serves as the building block of a polymer
amino acid an organic molecule possessing both a carboxyl and an amino group. Amino acids serve as the monomers of polypeptides
amino-terminus/ n-terminus
carbohydrates a sugar (monosaccharide) or one of its dimers ( disaccharides) or polymers (polysaccharides)
carboxyl terminus/c-terminus
Deoxyribonucleic Acid (DNA)
Nitrogenous state
Nucleic Acid
R group
Ribonucleic Acid
Saturated Fats
Unsaturated Fats
Alpha Helice a coiled region constituting one form of the secondary structure of proteins, arising from a specific pattern of hydrogen bonding between atoms of the polypeptide backbone
Antiparallel- in regards to DNA referring to the arrangement of the sugar-phosphate backbones in a DNA double helix (run in opposite 5' -> 3 directions.)
Beta-Sheet one form of the secondary structure of proteins in which the polypeptide chain folds back and forth, two regions of the chain lie parallel to each other and are held together by hydrogen bonds between atoms of the polypeptide backbone
Covalent Bond
Double Helix
Primary Structure
Secondary Structure
Tertiary Structure
Sugar-Phosphate Backbone
Created by: memobarcenas
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