BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
ates
D) Fats
1) The E) Other organisms
ulti Ans A
mat
e
sou 2) Which of the following is not a common component of biomolecules?
rce
of A) Carbon
ene B) Hydrogen
rgy C) Oxygen
for D) Nitrogen
life E) Chlorine
on Ans E
eart
h is
.
3) Which of the following is the basic structural unit of living organisms?
A) T
A) Nucleus
h
B) Cell membrane
e
C) Tissue
s
u D) Cell
n E) Cytoskeleton
B) G Ans D
e
o
t 4) Which of the following is not an organelle?
h
e A) Mitochondria
r B) Chloroplast
m C) Nucleus
a D) Plasma membrane
l E) Golgi complex
h Ans D
e
a
t 5) Which of the following is not a role played by carbohydrates in living cells?
C) C
a A) Energy source
r B) Structural support
b C) Intercellular communication
o
h
y
d Ans E
r
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
D) Both A
and B
are
correct
E) All are
roles
played
by
carboh
ydrates
in
living
cells
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
hat synthesize large molecules in living cells
C) Reactions that degrade molecules in living cells
6) Met D) Conversion of food molecules to energy
abo E) Reactions that synthesize and degrade molecules in living cells
lis Ans E
m is
bes 7) The average life span of a species is about years
t
defi A) One million
ned B) Ten million
as C) Five hundred thousand
the D) Five million
. E) One hundred thousand
Ans A
A) R
e
a
8) Which of the following is not a waste product of living organisms
c
t
A) Carbon dioxide
i
B) Water
o
C) Urea
n
s D) Ammonia
E) Glycine
o Ans E
f
l
i 9) Biochemistry is defined as
v
i A) The study of life processes
n B) The study of the molecular basis of life
g C) The study of living organisms
D) The study of organic compounds in living organisms
c E) The study of living compounds
e Ans B
l
l
s 10) One of the principal methods that organisms use to obtain energy from chemical bonds is by
B) R
e A) Substitution reactions
a B) Dehydration reactions
c C) Oxidation/reduction reactions
t
i
o
n Ans C
s
t
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
D) Hydrati reactions
on E) Addition reactions
11) The following is an example of which reaction class?
CH3Br + HSCH2CH(NH2)COOH CH3SCH2CH(NH2)COOH + Br + H+
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans A
12) The following is an example of which reaction class
HOOCCH=CHCOOH + H2O HOOCCH2CH(OH)COOH
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans C
13) The following is an example of which reaction class?
CH3CH2OH CH3CHO + H2O
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans E
14) Which of the following is not a component of nucleic acid?
A) Nucleotides
B) Glucose
C) Phosphate group
D) Purines
E) Pyrimidines
QUESTIONS WITH ANSWERS 2023 A+
ates
D) Fats
1) The E) Other organisms
ulti Ans A
mat
e
sou 2) Which of the following is not a common component of biomolecules?
rce
of A) Carbon
ene B) Hydrogen
rgy C) Oxygen
for D) Nitrogen
life E) Chlorine
on Ans E
eart
h is
.
3) Which of the following is the basic structural unit of living organisms?
A) T
A) Nucleus
h
B) Cell membrane
e
C) Tissue
s
u D) Cell
n E) Cytoskeleton
B) G Ans D
e
o
t 4) Which of the following is not an organelle?
h
e A) Mitochondria
r B) Chloroplast
m C) Nucleus
a D) Plasma membrane
l E) Golgi complex
h Ans D
e
a
t 5) Which of the following is not a role played by carbohydrates in living cells?
C) C
a A) Energy source
r B) Structural support
b C) Intercellular communication
o
h
y
d Ans E
r
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
D) Both A
and B
are
correct
E) All are
roles
played
by
carboh
ydrates
in
living
cells
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
hat synthesize large molecules in living cells
C) Reactions that degrade molecules in living cells
6) Met D) Conversion of food molecules to energy
abo E) Reactions that synthesize and degrade molecules in living cells
lis Ans E
m is
bes 7) The average life span of a species is about years
t
defi A) One million
ned B) Ten million
as C) Five hundred thousand
the D) Five million
. E) One hundred thousand
Ans A
A) R
e
a
8) Which of the following is not a waste product of living organisms
c
t
A) Carbon dioxide
i
B) Water
o
C) Urea
n
s D) Ammonia
E) Glycine
o Ans E
f
l
i 9) Biochemistry is defined as
v
i A) The study of life processes
n B) The study of the molecular basis of life
g C) The study of living organisms
D) The study of organic compounds in living organisms
c E) The study of living compounds
e Ans B
l
l
s 10) One of the principal methods that organisms use to obtain energy from chemical bonds is by
B) R
e A) Substitution reactions
a B) Dehydration reactions
c C) Oxidation/reduction reactions
t
i
o
n Ans C
s
t
, BIOCHEMESTRY CH 1 EXAM:AN INTRODUCTION
QUESTIONS WITH ANSWERS 2023 A+
D) Hydrati reactions
on E) Addition reactions
11) The following is an example of which reaction class?
CH3Br + HSCH2CH(NH2)COOH CH3SCH2CH(NH2)COOH + Br + H+
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans A
12) The following is an example of which reaction class
HOOCCH=CHCOOH + H2O HOOCCH2CH(OH)COOH
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans C
13) The following is an example of which reaction class?
CH3CH2OH CH3CHO + H2O
A) Substitution
B) Elimination
C) Addition
D) Isomerization
E) Oxidation/Reduction
Ans E
14) Which of the following is not a component of nucleic acid?
A) Nucleotides
B) Glucose
C) Phosphate group
D) Purines
E) Pyrimidines
