BIOLOGY 101 FINAL EXAM QUESTIONS
AND ANSWERS WITH VERIFIED
SOLUTIONS 100% CORRECT RATED A+
Neutron - ANSWER✔✔A particle with no charge (neither positive nor negative)
that is present in the nucleus is called Neutron
Proton - ANSWER✔✔a subatomic particle that has a positive charge and that is
found in the nucleus of an atom
Electron - ANSWER✔✔an elementary particle with negative charge, negatively
charged particle; located outside the atomic nucleus
Mass number - ANSWER✔✔the total number of protons and neutrons in the
nucleus of an atom
atomic number & mass number - ANSWER✔✔atomic number- number of protons
in one atom of the element.
mass number- number of protons + number of neutrons in one atom of the element
Isotope - ANSWER✔✔atoms of the same element that have different numbers of
neutrons
ionic bond - ANSWER✔✔a chemical bond resulting from the attraction between
oppositely charged ions
nonpolar covalent - ANSWER✔✔Bond formed when electron pairs are shared
equally between atoms.
polar covalent - ANSWER✔✔a type of bond that forms when electrons are not
shared equally
hydrogen bonds - ANSWER✔✔very weak bonds; occurs when a hydrogen atom in
one molecule is attracted to the electrostatic atom in another molecule
, adhesion - ANSWER✔✔the clinging of 1 substance to another by means of
hydrogen bonds
cohesion - ANSWER✔✔tendency of molecules of the same kind to stick to one
another
surface tension - ANSWER✔✔A measure of how difficult it is to stretch or break
the surface of a liquid. Water has a high surface tension because of the hydrogen
bonding of surface molecules.
solute - ANSWER✔✔the dissolved substance in a solution
solution - ANSWER✔✔a homogeneous mixture of two or more substances
solvent - ANSWER✔✔a liquid substance capable of dissolving other substances
acid - ANSWER✔✔compound that donates H+ ions to an aqueous solution and
measures less than 7 on the pH scale
base - ANSWER✔✔any substance that forms hydroxide ions in water and has a
pH above 7
ph - ANSWER✔✔A measure of hydrogen ion concentration equal to -log [H+]
and ranging in value from 0 to 14.
4 classes of macromolecules - ANSWER✔✔A. Carbohydrates. B. Lipids. C.
Proteins. D. Nucleic Acids.
dehydration synthesis - ANSWER✔✔A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
hydrolysis - ANSWER✔✔Breaking down complex molecules by the chemical
addition of water
proteins - ANSWER✔✔contains carbon, hydrogen, oxygen, and nitrogen. source
of energy. needed by tissue for repair and growth. made up of 20 amino acids.
AND ANSWERS WITH VERIFIED
SOLUTIONS 100% CORRECT RATED A+
Neutron - ANSWER✔✔A particle with no charge (neither positive nor negative)
that is present in the nucleus is called Neutron
Proton - ANSWER✔✔a subatomic particle that has a positive charge and that is
found in the nucleus of an atom
Electron - ANSWER✔✔an elementary particle with negative charge, negatively
charged particle; located outside the atomic nucleus
Mass number - ANSWER✔✔the total number of protons and neutrons in the
nucleus of an atom
atomic number & mass number - ANSWER✔✔atomic number- number of protons
in one atom of the element.
mass number- number of protons + number of neutrons in one atom of the element
Isotope - ANSWER✔✔atoms of the same element that have different numbers of
neutrons
ionic bond - ANSWER✔✔a chemical bond resulting from the attraction between
oppositely charged ions
nonpolar covalent - ANSWER✔✔Bond formed when electron pairs are shared
equally between atoms.
polar covalent - ANSWER✔✔a type of bond that forms when electrons are not
shared equally
hydrogen bonds - ANSWER✔✔very weak bonds; occurs when a hydrogen atom in
one molecule is attracted to the electrostatic atom in another molecule
, adhesion - ANSWER✔✔the clinging of 1 substance to another by means of
hydrogen bonds
cohesion - ANSWER✔✔tendency of molecules of the same kind to stick to one
another
surface tension - ANSWER✔✔A measure of how difficult it is to stretch or break
the surface of a liquid. Water has a high surface tension because of the hydrogen
bonding of surface molecules.
solute - ANSWER✔✔the dissolved substance in a solution
solution - ANSWER✔✔a homogeneous mixture of two or more substances
solvent - ANSWER✔✔a liquid substance capable of dissolving other substances
acid - ANSWER✔✔compound that donates H+ ions to an aqueous solution and
measures less than 7 on the pH scale
base - ANSWER✔✔any substance that forms hydroxide ions in water and has a
pH above 7
ph - ANSWER✔✔A measure of hydrogen ion concentration equal to -log [H+]
and ranging in value from 0 to 14.
4 classes of macromolecules - ANSWER✔✔A. Carbohydrates. B. Lipids. C.
Proteins. D. Nucleic Acids.
dehydration synthesis - ANSWER✔✔A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
hydrolysis - ANSWER✔✔Breaking down complex molecules by the chemical
addition of water
proteins - ANSWER✔✔contains carbon, hydrogen, oxygen, and nitrogen. source
of energy. needed by tissue for repair and growth. made up of 20 amino acids.
