BIOCHEMISTRY CORRECT QUESTIONS AND ANSWERS

BIOCHEMISTRY CORRECT
QUESTIONS AND ANSWERS


Matter - CORRECT ANSWER-Anything that has mass and/or
takes up space (volume)

Element - CORRECT ANSWER-A substance that cannot be
broken down into other substances by chemical reactions

Molecule - CORRECT ANSWER-Any combination of atoms

Compound - CORRECT ANSWER-Two or more different
elements combined in a fixed ratio

Atom - CORRECT ANSWER-Smallest unit of matter that
retains the properties of an element

Atomic Number - CORRECT ANSWER-Number of protons

Mass Number - CORRECT ANSWER-Number of protons plus
neutrons

Atomic Weight - CORRECT ANSWER-1 mole of a sustance =
atomic weight in grams

Isotope - CORRECT ANSWER-Atom with an abnormal number
of neutrons

Proton - CORRECT ANSWER-Positively charged subatomic
particle

Neutron - CORRECT ANSWER-Subatomic particle with no
charge

, Electron - CORRECT ANSWER-Negatively charged subatomic
particle

Valence Electron - CORRECT ANSWER-Outermost electrons
in an atom

Covalent Bond - CORRECT ANSWER-Sharing of electrons
(Two non-metals)

Ionic Bond - CORRECT ANSWER-Electrostatic attraction of
positive and negative ions (Metal and Non-metal)

Valence shell - CORRECT ANSWER-An atom's outermost
electron shell

Polar Covalent Bond - CORRECT ANSWER-Unequal sharing
of electrons due to difference in electronegativity

Cation - CORRECT ANSWER-Positively charged ion

Anion - CORRECT ANSWER-Negatively charged ion

Hydrogen bond - CORRECT ANSWER-Hydrogen atom
covalently bonded to an electronegative atoms is attracted to
another electronegative atom

Reactants - CORRECT ANSWER-Starting materials in a
reaction

Products - CORRECT ANSWER-Ending materials in a reaction

Cohesion - CORRECT ANSWER-Two or more molecules of
the same substance held together by hydrogen bonds

Adhesion - CORRECT ANSWER-Two or more molecules of
different substances held together by hydrogen bonds