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Multiple Choice Questions
1)
The synthesis of which molecule is considered by many to be the root of biochemistry
since it was the first synthesis of a biological molecule from non-biological precursors?
A)
B)
C)
D)
E)
DNA
urea
glucose
glycine
adenosine triphosphate (ATP)
Answer: B
Difficulty: 1
2)
Topic:
The Roots of Biochemistry
Prior to 1926, the source of biological catalysis was postulated to be possessed by
“ferments” which today are called _______.
A)
B)
C)
D)
E)
proteins
nucleic acids
enzymes
polysaccharides
membranes
Answer: C
Difficulty: 1
3)
Topic:
The Roots of Biochemistry
Originally, nucleic acids were thought to serve what role within a cell?
A)
B)
C)
D)
E)
catalysts
genetic
structural
buffer
none of the above
Answer: C
Difficulty: 1
4)
Topic:
The Roots of Biochemistry
Which of the following organelles is found in plant cells, but not in animal cells
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A)
B)
C)
D)
E)
chloroplast
Golgi apparatus
mitochondrion
smooth endoplasmic reticulum
rough endoplasmic reticulum
Answer: A
Difficulty: 1
5)
Topic:
The Roots of Biochemistry
Which of the following elements is considered a second tier biochemical element meaning
that it is less abundant than first tier elements but still required for life in all organisms?
A)
B)
C)
D)
E)
H
N
P
C
O
Answer: C
Difficulty: 1
6)
Topic:
Biochemistry as a Chemical Science
Which of the following is a polymer derived from glucose?
A)
B)
C)
D)
E)
cellulose
ribonucleic acid
polypeptide
deoxyribonucleic acid
none of the above
Answer: A
Difficulty: 1
7)
Topic:
Biochemistry as a Chemical Science
Which of the following macromolecules is considered a homopolymer?
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A)
B)
C)
D)
E)
polypeptides
ribonucleic acids
deoxyribonucleic acids
starch
all of the above
Answer: D
Difficulty: 2
8)
Topic:
Biochemistry as a Chemical Science
Which of the following is a role played by proteins?
A)
B)
C)
D)
E)
structural
transport
information signaling
catalysts
all of the above
Answer: E
Difficulty: 2
9)
Topic:
Biochemistry as a Chemical Science
Of the following biomolecules, which is found only in a monomeric form as opposed to a
polymeric form?
A)
B)
C)
D)
E)
amino acids
carbohydrates
lipids
nucleotides
none of the above
Answer: C
Difficulty: 1
Topic:
Biochemistry as a Chemical Science
10) What functional groups are found in the following molecule?
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A)
B)
C)
D)
E)
amine, carboxylic acid and ketone
amine, carboxylic acid and amide
amine, aldehyde and amide
amine, aldehyde and ketone
none of the above
Answer: B
Difficulty: 2
Topic:
Biochemistry as a Chemical Science
11) What functional groups are found in the following molecule?
A)
B)
C)
D)
E)
carboxylic acid, ether, amine and alcohol
carboxylic acid, ester, amine and alcohol
carboxylic acid, acetal, amine and alcohol
carboxylic acid, ether, amide and alcohol
carboxylic acid, hemiacetal, amine and alcohol
Answer: E
Difficulty: 3
Topic:
Biochemistry as a Chemical Science
12) Of Koshland’s “pillars of life,” which deals specifically with the structure and function of
DNA?
A) program
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B)
C)
D)
E)
compartmentation
energy
regeneration
adaptability
Answer: A
Difficulty: 2
Topic:
Biochemistry as a Biological Science
13) Which of the following best describes homeostasis?
A)
B)
C)
D)
E)
a non-equilibrium, non-steady state
a non-equilibrium steady state
an equilibrium-controlled, non-steady state
an equilibrium-controlled steady state
none of the above
Answer: B
Difficulty: 2
Topic:
Biochemistry as a Biological Science
14) Since the earth is approximately 4.5 billion years old, which of the following is true
regarding life on this planet?
A) life forms that arose 3.8 billion years ago were able to synthesize the building blocks of
life from non-organic molecules
B) the earliest organisms on this planet were anaerobic
C) the oxygen in the earth’s atmosphere was originally trapped in ice and thus unavailable
for living organisms
D) all multi-cellular anaerobic organisms died out as oxygen became more plentiful
E) none of the above
Answer: B
Difficulty: 2
Topic:
Biochemistry as a Biological Science
15) While there are many ways to compare biochemical similarities in organisms, the
molecular tree of life is based predominantly on similarities in what biological molecule?
A) DNA
B) proteins
C) ribosomal RNA
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D) transfer RNA
E) lipids of cell membranes
Answer: C
Difficulty: 1
Topic:
Biochemistry as a Biological Science
16) The genetic information of viruses is contained within __________ .
A)
B)
C)
D)
E)
DNA
DNA or RNA
specialized proteins with defined amino acid sequence
specialized carbohydrates with defined sequence
none of the above
Answer: B
Difficulty: 1
Topic:
Biochemistry as a Biological Science
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Short Answer Questions
1) The molecule pyruvic acid is found at the crossroads of several biochemical pathways.
Pyruvic acid is also known as 2-oxopropanoic acid. Based upon this name, draw the
molecule.
Answer:
Difficulty: 2
Topic:
Biochemistry as a Chemical Science
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