chapter 2 section 3 Flashcards
makes water good at dissolving things
polarity
make ice less dense than water
hydrogen bonds
the actraction of water molecules for other water molecules
cohesion
the attraction of water molecules for other substances
adhesion
molecules that contain carbon covalently bonded to other elements, typically oxygen,nitrogen, hydrogen and sometimes certain nonmetals and metals
organic compound
organic compounds made of carbons hydrogyns and oxygens
carbohydrates
simple carbohydrates
sugar
a class of nonpolor organic compund tha are insoluble in water and are used for energy storage and cell membranes in living things
Lipid
molecules that have a central carbon bonded to four groups an amine group, a carboxylic acid group, a hydrogyn and an R group.
amino acids
the base for DNA and RNA
nucleotide
quality of molecules having an uneven distribution of elctrical charge, resulting in some regions of a molecule having negative charge while others are positive
polar
contain double and triple bonds
unsaturated
contain only single bonds
saturated
makes one amino acid different from another
R Group
long chains of amino acids
ptotiens
