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Glossary of Bio Terms 2

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Smallest unit of matter
Atom
Substance made of only one kind of Atom
Element
A substance made up of joined atoms
Compound
Group of atoms held together by covalent bonds
molecule
an atom/molecule that has lost one or two more electrons
ion
Attraction between substances of the same kind
cohesion
An attraction between different substances
Adhesion
A mixture where substance are evenly distributed
solution
Compounds that form hydrogen ions in the solution is increased
acids
Concentration of Hydrogen ions in a solution
bases
Organic compound made of carbon,hydrogen, and oxygen atoms in the proportion of 1:2:1
Carbohydrate
The building blocks of carbohydrates
Monosaccharides
fats, phospholipids, steroids, and waxes.
Lipids
A chain of amino acids linked together
protein
The building blocks of proteins
amino acids
a chain of nucleotides
nucliec acid
makes up nucliec acids
nucleotide
Two strands of nucleotides held together in a spiral fomation by hydrogen bonds
DNA
Manufacturer of proteins
RNA
Energy storer in cells
ATP
The ability to move or change matter
Energy
The enegry needed to start a chemical reaction
Activation energy
Substance that increases the speed of chemical reactions
Enzymes
A substance that is acted on by an enzyme
substrate
Pocket for substrates
active site

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