BIOL 2030 EXAMINATION QUESTIONS AND
ANSWERS SET A+
✔✔Which of the following is (are) organic? To be marked correct, you'll need to select
all true statements, as there may be more than one correct answer. - ✔✔C6H12O6
CH4
✔✔Choose the true statement(s) regarding the pH scale. To be marked correct, you'll
need to select all true statements, as there may be more than one correct answer. -
✔✔Acidosis is a pathological situation in which the body has a lower than normal blood
pH.
A solution's pH decreases as H+ concentration increases.
A solution with a pH of 6 has an H+ concentration that is tenfold higher than that of a
solution with a pH of 7.
✔✔Organisms depend on _______, which are compounds that stabilize pH by
absorbing or releasing H+ ions. - ✔✔buffers
✔✔___________ are formed when ionic compounds dissolve in solution and have a
role in regulating blood volume. - ✔✔Electrolytes
✔✔Assume you are a pediatric patient suffering from a severe form of infectious
diarrhea. Which of the following condition(s) is/are they most likely to develop as a
direct result of diarrhea? To be marked correct, you'll need to select all true statements,
as there may be more than one correct answer. - ✔✔Electrolyte imbalance
Dehydration
✔✔Choose the true statement(s) about activation energy. To be marked correct, you'll
need to select all true statements, as there may be more than one correct answer. -
✔✔Enzymes lower the activation energy of a reaction.
Activation energy is the minimum amount of energy needed to start a reaction.
, ✔✔In biological systems, the energy released by ______ reactions is used to fuel
_________ reactions. - ✔✔exergonic, endergonic
✔✔Choose the true statement(s) about equilibrium. To be marked correct, you'll need to
select all true statements, as there may be more than one correct answer. - ✔✔By
definition, equilibrium is a term that mainly applies to reversible reactions.
Reactions at equilibrium have the forward and reverse reactions occurring at the same
rate.
Equilibrium is not a static situation where the reaction just stops.
✔✔Consider the reaction AB → A + B. What is the product of this reaction? - ✔✔A and
B
✔✔Which reaction has X and Y as reactants? - ✔✔X + Y → XY
✔✔Which statement does not describe a catalyst? - ✔✔A catalyst will decrease the rate
of a reaction.
✔✔Activation energy - ✔✔is the minimum amount of energy needed to get a reaction
started and is due to the necessity of collisions between reactants which have enough
energy and with the reactants properly oriented and can be lowered by catalysts such
as enzymes in biochemical reactions.
✔✔How are DNA and RNA different? To be marked correct, you'll need to select all true
statements, as there may be more than one correct answer. - ✔✔DNA is usually
double-stranded, while RNA is usually single-stranded.
Deoxyribonucleotides make up DNA, while ribonuclotides make up RNA.
✔✔Which of the following is not one of the four main groups of biomolecules? -
✔✔electrolytes
✔✔Which of the biomolecules is incorrectly matched with its building block? -
✔✔Carbohydrate: Polysaccharide
✔✔The primary structure of a protein - ✔✔is the linear sequence of amino acids which
are held together by peptide bonds and is dictated by genetic sequence and is unique to
that protein and lays the foundation for all higher order structure of that protein.
✔✔Using the Periodic Table of Elements, select all of the true statements about carbon.
To be marked correct, you'll need to select all true statements, as there may be more
than one correct answer. - ✔✔One carbon atom contains 6 protons and 6 neutrons.
Carbon's atomic number is 6.
ANSWERS SET A+
✔✔Which of the following is (are) organic? To be marked correct, you'll need to select
all true statements, as there may be more than one correct answer. - ✔✔C6H12O6
CH4
✔✔Choose the true statement(s) regarding the pH scale. To be marked correct, you'll
need to select all true statements, as there may be more than one correct answer. -
✔✔Acidosis is a pathological situation in which the body has a lower than normal blood
pH.
A solution's pH decreases as H+ concentration increases.
A solution with a pH of 6 has an H+ concentration that is tenfold higher than that of a
solution with a pH of 7.
✔✔Organisms depend on _______, which are compounds that stabilize pH by
absorbing or releasing H+ ions. - ✔✔buffers
✔✔___________ are formed when ionic compounds dissolve in solution and have a
role in regulating blood volume. - ✔✔Electrolytes
✔✔Assume you are a pediatric patient suffering from a severe form of infectious
diarrhea. Which of the following condition(s) is/are they most likely to develop as a
direct result of diarrhea? To be marked correct, you'll need to select all true statements,
as there may be more than one correct answer. - ✔✔Electrolyte imbalance
Dehydration
✔✔Choose the true statement(s) about activation energy. To be marked correct, you'll
need to select all true statements, as there may be more than one correct answer. -
✔✔Enzymes lower the activation energy of a reaction.
Activation energy is the minimum amount of energy needed to start a reaction.
, ✔✔In biological systems, the energy released by ______ reactions is used to fuel
_________ reactions. - ✔✔exergonic, endergonic
✔✔Choose the true statement(s) about equilibrium. To be marked correct, you'll need to
select all true statements, as there may be more than one correct answer. - ✔✔By
definition, equilibrium is a term that mainly applies to reversible reactions.
Reactions at equilibrium have the forward and reverse reactions occurring at the same
rate.
Equilibrium is not a static situation where the reaction just stops.
✔✔Consider the reaction AB → A + B. What is the product of this reaction? - ✔✔A and
B
✔✔Which reaction has X and Y as reactants? - ✔✔X + Y → XY
✔✔Which statement does not describe a catalyst? - ✔✔A catalyst will decrease the rate
of a reaction.
✔✔Activation energy - ✔✔is the minimum amount of energy needed to get a reaction
started and is due to the necessity of collisions between reactants which have enough
energy and with the reactants properly oriented and can be lowered by catalysts such
as enzymes in biochemical reactions.
✔✔How are DNA and RNA different? To be marked correct, you'll need to select all true
statements, as there may be more than one correct answer. - ✔✔DNA is usually
double-stranded, while RNA is usually single-stranded.
Deoxyribonucleotides make up DNA, while ribonuclotides make up RNA.
✔✔Which of the following is not one of the four main groups of biomolecules? -
✔✔electrolytes
✔✔Which of the biomolecules is incorrectly matched with its building block? -
✔✔Carbohydrate: Polysaccharide
✔✔The primary structure of a protein - ✔✔is the linear sequence of amino acids which
are held together by peptide bonds and is dictated by genetic sequence and is unique to
that protein and lays the foundation for all higher order structure of that protein.
✔✔Using the Periodic Table of Elements, select all of the true statements about carbon.
To be marked correct, you'll need to select all true statements, as there may be more
than one correct answer. - ✔✔One carbon atom contains 6 protons and 6 neutrons.
Carbon's atomic number is 6.
