APHY 101 ANATOMY AND PHYSIOLOGY 1
FULLY SOLVED EXAM PAPER GRADED A+
◉ Proton
Answer: subatomic particle that has a positive charge
◉ Neutron
Answer: subatomic particle that has no charge
◉ Electron
Answer: subatomic particle that has a negative charge
◉ Atomic number
Answer: number or protons in nucleus
◉ Atomic mass
Answer: number of protons plus number of neutrons
◉ What are covalent bonds?
Answer: Covalent bonds are formed when atoms share electrons to
become stable with filled
,outer shells
◉ What are ionic bonds?
Answer: 2 oppositely charged atoms form this bond when electrons
are transferred from one atom to another atom
◉ What are hydrogen bonds?
Answer: Weak attraction between positive end of one polar
molecule and negative end of another polar molecule; formed
between water molecules
◉ Define ion
Answer: When atoms gain or lose electrons, they become ions.
◉ Define synthesis reaction
Answer: Two or more atoms or molecules are joined together
◉ Define decomposition reaction
Answer: Larger molecules are broken down into smaller ones
◉ Define exchange reaction
Answer: Parts of molecules trade places
,◉ Define reactant
Answer: The starting materials of the reaction - the atoms, ions, or
molecules
◉ Define product
Answer: Substances formed at the end of the chemical reaction
◉ Define catalyst
Answer: influence the rates of chemical reactions
◉ What is an acid?
Answer: Electrolytes that release hydrogen ions in water
◉ What is a base?
Answer: Electrolytes that release ions that combine with hydrogen
ions in water
◉ What is a salt?
Answer: Acids and bases that react to form water and electrolytes
◉ What is a pH scale?
, Answer: represents the concentration of hydrogen ions [H+] in
solution
◉ Neutral solution
Answer: pH 7;
indicates equal concentrations of H+
and OH-
◉ Acidic solution
Answer: pH less than
7; indicates a greater concentration of H+
◉ Basic solution
Answer: pH greater than 7; indicates a greater concentration of OH-
◉ What is the difference between an organic molecule and an
inorganic molecule?
Answer: organic compounds have hydrogen and carbon; inorganic
compounds do not
◉ What is dehydration synthesis and hydrolysis?
Answer: Dehydration reactions link monomers together into
polymers by releasing water, and hydrolysis breaks polymers into
FULLY SOLVED EXAM PAPER GRADED A+
◉ Proton
Answer: subatomic particle that has a positive charge
◉ Neutron
Answer: subatomic particle that has no charge
◉ Electron
Answer: subatomic particle that has a negative charge
◉ Atomic number
Answer: number or protons in nucleus
◉ Atomic mass
Answer: number of protons plus number of neutrons
◉ What are covalent bonds?
Answer: Covalent bonds are formed when atoms share electrons to
become stable with filled
,outer shells
◉ What are ionic bonds?
Answer: 2 oppositely charged atoms form this bond when electrons
are transferred from one atom to another atom
◉ What are hydrogen bonds?
Answer: Weak attraction between positive end of one polar
molecule and negative end of another polar molecule; formed
between water molecules
◉ Define ion
Answer: When atoms gain or lose electrons, they become ions.
◉ Define synthesis reaction
Answer: Two or more atoms or molecules are joined together
◉ Define decomposition reaction
Answer: Larger molecules are broken down into smaller ones
◉ Define exchange reaction
Answer: Parts of molecules trade places
,◉ Define reactant
Answer: The starting materials of the reaction - the atoms, ions, or
molecules
◉ Define product
Answer: Substances formed at the end of the chemical reaction
◉ Define catalyst
Answer: influence the rates of chemical reactions
◉ What is an acid?
Answer: Electrolytes that release hydrogen ions in water
◉ What is a base?
Answer: Electrolytes that release ions that combine with hydrogen
ions in water
◉ What is a salt?
Answer: Acids and bases that react to form water and electrolytes
◉ What is a pH scale?
, Answer: represents the concentration of hydrogen ions [H+] in
solution
◉ Neutral solution
Answer: pH 7;
indicates equal concentrations of H+
and OH-
◉ Acidic solution
Answer: pH less than
7; indicates a greater concentration of H+
◉ Basic solution
Answer: pH greater than 7; indicates a greater concentration of OH-
◉ What is the difference between an organic molecule and an
inorganic molecule?
Answer: organic compounds have hydrogen and carbon; inorganic
compounds do not
◉ What is dehydration synthesis and hydrolysis?
Answer: Dehydration reactions link monomers together into
polymers by releasing water, and hydrolysis breaks polymers into
