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bio vocab
UNIT 1 TEST VOCAB
23
Biology
11th Grade
09/29/2015

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Term
Atom
Definition
the basic unit of a chemical element
Term
Element
Definition
each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
Term
Nucleus
Definition
the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass
Term
Proton
Definition
subatomic particle positive electric charge
Term
Neutron
Definition
neutral subatomic particle
Term
Electron
Definition
negative subatomic particle
Term
Molecule
Definition
a group of atoms bonded together
Term
Compound
Definition
a thing that is composed of two or more separate elements
Term
Isotope
Definition
same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties
Term
Adhesion
Definition
bonding to something else
Term
cohesion
Definition
bonding to oneself
Term
Polarity
Definition
magnetic fields +/-
Term
Acid
Definition
can donate a proton
Term
Base
Definition
receives a proton
Term
Solvent
Definition
the liquid in which a solute is dissolved to form a solution
Term
Solute
Definition
dissolved in the solvent
Term
Monomer
Definition
a molecule that can be bonded to other identical molecules to form a polymer
Term
Polymer
Definition
a substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together
Term
Monosaccharide
Definition
carbohydrate monomers including Glucose and fructose
Term
Polysaccharide
Definition
carbohydrate polymers
Term
Amino Acid
Definition
Protein monomer
Term
Enzyme
Definition
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction
Term
Substrate
Definition
a substance or layer that underlies something, or on which some process occurs, in particular.
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