BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
1. lipids, nucelotides, monosaccharides, amino acids: What are the four
major classes of molecules studied in biochemistry (in monomeric form)?
2. carbohydrates: Polymers of sugars are
.
3. proteins: Amino acids are the building
blocks of .
4. pH = pKa + log([A-]/[HA]): What is the Henderson-Hasselbalch equation?
5. tris acid (HCl), tris base: [HA]
is the and [A-] is the .
6. B) carbon: Which of the following is the most abundant element in the human body?
A) nitrogen
B) carbon
C) oxygen
D) phosphorous
E) none of the above
7. D) lipids: Which of the major types of biomolecules is never found in a polymeric form?
A) amino acids
B) carbohydrates
C) nucleotides
D) lipids
E) none of the above
8. B) polysaccharide: glycosidic bond: Which of the following biopolymers is correctly
paired with the bond that forms between the monomers?
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
A) protein: ester bond
B) polysaccharide: glycosidic bond
C) DNA: phosphate bond
D) RNA: phosphate bondE)all of the above
9. D) polysaccharide: energy storage: Which of the biopolymers is correctly paired
with its major function?
A) protein: information encoding
B) nucleic acids: energy storage
C) lipids: information encoding
D) polysaccharide: energy storage
E) none of the above
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
10. A) nucleic acids: The similarity of one organism to another (for example a bacteria
versus a human) is most easily done by comparing which biopolymer?
A) nucleic acids
B) polysaccharides
C) proteins
D) lipids
E) all of the above
11. D) positive; negative:
In a water molecule, hydrogens are partially ; oxygens are partially .
A) negative; negative
B) negative; positive
C) positive; positive
D) positive; negative
E) none of the above
12. A) two ; one H-bond donor, one H-bond acceptor: At any given
moment, a single water molecule participates in strong hydrogen bond(s). The role played
by the water molecule is best characterized as .
A) two ; one H-bond donor, one H-bond acceptor
B) two ; two H-bond donor
C) two ; two H-bond acceptor
D) one; H-bond donor
E) one; H-bond acceptor
13. B) the hydrogen bond will typically form between
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
a hydrogen atom and either a nitrogen, sulfur, or oxygen atom: In a
hydrogen bond between a water molecule and another biomolecule, .
A) a hydrogen ion on the water molecule forms an ionic bond with a hydride ion on the other molecule
B) the hydrogen bond will typically form between a hydrogen atom and either a nitrogen, sulfur, or
oxygen atom
C) the partial charge on a hydrogen of the water interacts with the partial charge on a hydrogen of the
other molecule
D) a hydrogen on the water molecule forms a covalent bond to an oxygen or nitrogen atom on the
other molecule
E) the hydrogen atom is located between an oxygen atom of the water and a carbon atom of the other
molecule
14. E) ionic interactions:
The strongest non-covalent interactions are .
A) van der Waals interactions
B) London dispersion forces
ANSWERS
1. lipids, nucelotides, monosaccharides, amino acids: What are the four
major classes of molecules studied in biochemistry (in monomeric form)?
2. carbohydrates: Polymers of sugars are
.
3. proteins: Amino acids are the building
blocks of .
4. pH = pKa + log([A-]/[HA]): What is the Henderson-Hasselbalch equation?
5. tris acid (HCl), tris base: [HA]
is the and [A-] is the .
6. B) carbon: Which of the following is the most abundant element in the human body?
A) nitrogen
B) carbon
C) oxygen
D) phosphorous
E) none of the above
7. D) lipids: Which of the major types of biomolecules is never found in a polymeric form?
A) amino acids
B) carbohydrates
C) nucleotides
D) lipids
E) none of the above
8. B) polysaccharide: glycosidic bond: Which of the following biopolymers is correctly
paired with the bond that forms between the monomers?
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
A) protein: ester bond
B) polysaccharide: glycosidic bond
C) DNA: phosphate bond
D) RNA: phosphate bondE)all of the above
9. D) polysaccharide: energy storage: Which of the biopolymers is correctly paired
with its major function?
A) protein: information encoding
B) nucleic acids: energy storage
C) lipids: information encoding
D) polysaccharide: energy storage
E) none of the above
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
10. A) nucleic acids: The similarity of one organism to another (for example a bacteria
versus a human) is most easily done by comparing which biopolymer?
A) nucleic acids
B) polysaccharides
C) proteins
D) lipids
E) all of the above
11. D) positive; negative:
In a water molecule, hydrogens are partially ; oxygens are partially .
A) negative; negative
B) negative; positive
C) positive; positive
D) positive; negative
E) none of the above
12. A) two ; one H-bond donor, one H-bond acceptor: At any given
moment, a single water molecule participates in strong hydrogen bond(s). The role played
by the water molecule is best characterized as .
A) two ; one H-bond donor, one H-bond acceptor
B) two ; two H-bond donor
C) two ; two H-bond acceptor
D) one; H-bond donor
E) one; H-bond acceptor
13. B) the hydrogen bond will typically form between
, BIOCHEMISTRY TESTBANK 1 QUESTIONS AND
ANSWERS
a hydrogen atom and either a nitrogen, sulfur, or oxygen atom: In a
hydrogen bond between a water molecule and another biomolecule, .
A) a hydrogen ion on the water molecule forms an ionic bond with a hydride ion on the other molecule
B) the hydrogen bond will typically form between a hydrogen atom and either a nitrogen, sulfur, or
oxygen atom
C) the partial charge on a hydrogen of the water interacts with the partial charge on a hydrogen of the
other molecule
D) a hydrogen on the water molecule forms a covalent bond to an oxygen or nitrogen atom on the
other molecule
E) the hydrogen atom is located between an oxygen atom of the water and a carbon atom of the other
molecule
14. E) ionic interactions:
The strongest non-covalent interactions are .
A) van der Waals interactions
B) London dispersion forces
