BIOLOGY 101 FINAL EXAM
QUESTIONS & ANSWERS PASSED
ALREADY GRADED A+
Neutron - correct answer ✔✔A particle with no charge (neither positive nor negative) that is
present in the nucleus is called Neutron
Proton - correct answer ✔✔a subatomic particle that has a positive charge and that is found in
the nucleus of an atom
Electron - correct answer ✔✔an elementary particle with negative charge, negatively charged
particle; located outside the atomic nucleus
Mass number - correct answer ✔✔the total number of protons and neutrons in the nucleus of
an atom
atomic number & mass number - correct 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 - correct answer ✔✔atoms of the same element that have different numbers of
neutrons
ionic bond - correct answer ✔✔a chemical bond resulting from the attraction between
oppositely charged ions
,nonpolar covalent - correct answer ✔✔Bond formed when electron pairs are shared equally
between atoms.
polar covalent - correct answer ✔✔a type of bond that forms when electrons are not shared
equally
hydrogen bonds - correct answer ✔✔very weak bonds; occurs when a hydrogen atom in one
molecule is attracted to the electrostatic atom in another molecule
adhesion - correct answer ✔✔the clinging of 1 substance to another by means of hydrogen
bonds
cohesion - correct answer ✔✔tendency of molecules of the same kind to stick to one another
surface tension - correct 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 - correct answer ✔✔the dissolved substance in a solution
solution - correct answer ✔✔a homogeneous mixture of two or more substances
solvent - correct answer ✔✔a liquid substance capable of dissolving other substances
acid - correct answer ✔✔compound that donates H+ ions to an aqueous solution and measures
less than 7 on the pH scale
4 classes of macromolecules - correct answer ✔✔A. Carbohydrates. B. Lipids. C. Proteins. D.
Nucleic Acids.
, base - correct answer ✔✔any substance that forms hydroxide ions in water and has a pH above
7
ph - correct answer ✔✔A measure of hydrogen ion concentration equal to -log [H+] and ranging
in value from 0 to 14.
dehydration synthesis - correct answer ✔✔A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
hydrolysis - correct answer ✔✔Breaking down complex molecules by the chemical addition of
water
proteins - correct answer ✔✔contains carbon, hydrogen, oxygen, and nitrogen. source of
energy. needed by tissue for repair and growth. made up of 20 amino acids.
lipids - correct answer ✔✔biochemicals that do not dissolve in water (fats, oils, and waxes)
make up cell membranes, store energy
carbohydrates - correct answer ✔✔compound made up of carbon, hydrogen, and oxygen
atoms; major source of energy for the human body
nucleic acids - correct answer ✔✔Polymers assembled from individual nucleotides; used to
store and transmit hereditary, or genetic, information; the two kinds of nucleic acids are
ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) (p. 47).
4 structural levels of a protein - correct answer ✔✔Primary (First), Secondary (Second), Tertiary
(Third), Quaternary (Fourth)
QUESTIONS & ANSWERS PASSED
ALREADY GRADED A+
Neutron - correct answer ✔✔A particle with no charge (neither positive nor negative) that is
present in the nucleus is called Neutron
Proton - correct answer ✔✔a subatomic particle that has a positive charge and that is found in
the nucleus of an atom
Electron - correct answer ✔✔an elementary particle with negative charge, negatively charged
particle; located outside the atomic nucleus
Mass number - correct answer ✔✔the total number of protons and neutrons in the nucleus of
an atom
atomic number & mass number - correct 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 - correct answer ✔✔atoms of the same element that have different numbers of
neutrons
ionic bond - correct answer ✔✔a chemical bond resulting from the attraction between
oppositely charged ions
,nonpolar covalent - correct answer ✔✔Bond formed when electron pairs are shared equally
between atoms.
polar covalent - correct answer ✔✔a type of bond that forms when electrons are not shared
equally
hydrogen bonds - correct answer ✔✔very weak bonds; occurs when a hydrogen atom in one
molecule is attracted to the electrostatic atom in another molecule
adhesion - correct answer ✔✔the clinging of 1 substance to another by means of hydrogen
bonds
cohesion - correct answer ✔✔tendency of molecules of the same kind to stick to one another
surface tension - correct 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 - correct answer ✔✔the dissolved substance in a solution
solution - correct answer ✔✔a homogeneous mixture of two or more substances
solvent - correct answer ✔✔a liquid substance capable of dissolving other substances
acid - correct answer ✔✔compound that donates H+ ions to an aqueous solution and measures
less than 7 on the pH scale
4 classes of macromolecules - correct answer ✔✔A. Carbohydrates. B. Lipids. C. Proteins. D.
Nucleic Acids.
, base - correct answer ✔✔any substance that forms hydroxide ions in water and has a pH above
7
ph - correct answer ✔✔A measure of hydrogen ion concentration equal to -log [H+] and ranging
in value from 0 to 14.
dehydration synthesis - correct answer ✔✔A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
hydrolysis - correct answer ✔✔Breaking down complex molecules by the chemical addition of
water
proteins - correct answer ✔✔contains carbon, hydrogen, oxygen, and nitrogen. source of
energy. needed by tissue for repair and growth. made up of 20 amino acids.
lipids - correct answer ✔✔biochemicals that do not dissolve in water (fats, oils, and waxes)
make up cell membranes, store energy
carbohydrates - correct answer ✔✔compound made up of carbon, hydrogen, and oxygen
atoms; major source of energy for the human body
nucleic acids - correct answer ✔✔Polymers assembled from individual nucleotides; used to
store and transmit hereditary, or genetic, information; the two kinds of nucleic acids are
ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) (p. 47).
4 structural levels of a protein - correct answer ✔✔Primary (First), Secondary (Second), Tertiary
(Third), Quaternary (Fourth)
