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Science Vocab 147928

Question	Answer
lipid	A fat or oil.
metabolism	The total of all chemical reactions that occur within a living organism.
monosaccharide	The basic component of carbohydrates. A simple sugar such as glucose is an example.
nucleic acid	Composed of nucleotides, these polymers store and translate genetic code in organisms.
nucleotide	The basic component of nucleic acids consisting of a simple sugar, a nitrogenous base, and a phosphate group.
peptide bond	Amino acids are bound together by these covalent bonds.
polysaccharide	Large carbohydrate molecules composed of many sugar molecules. Examples are cellulose, and glycogen.
protein	Made up of amino acids, examples of this macromolecule are eggs, meat and fish.
RNA	A nucleic acid that is single standed.
deoxyribonucleic acid	DNA - contains the information that determines the characteristics of an organism.
amino acids	These joined by peptide bonds make proteins.
active site	The place where an enzyme and a substrate meet.
carbohydrates	Starches and sugars belong to this major macromolecule group.
dissaccharide	Two sugars joined together.
enzyme	A protein that joins with a substrate and splits it in two.
phospholipids	cell membranes are made of this hydrophobic/hydrophilic molecule
wax	this lipid forms the waterproof coating on plant leaves
steroid	a lipid hormone like testosterone
substrates	enzymes act on these
fatty acids	unbranched carbon chains that make up most lipids
polypeptide	long chains of amino acids;another name for a protein