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Biochemistry Test bank 1 Exam Question & Answers 2025.docx
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Biochemistry Test bank 1 Exam Question &Answers 2025
lipids, nucelotides, monosaccharides, amino acids - Correct Answers
✅What are the four major classes of molecules studied in biochemistry
(in monomeric form)?
carbohydrates - Correct Answers ✅Polymers of sugars are
__________.
proteins - Correct Answers ✅Amino acids are the building blocks of
_________.
pH = pKa + log([A-]/[HA]) - Correct Answers ✅What is the Henderson-
Hasselbalch equation?
tris acid (HCl), tris base - Correct Answers ✅[HA] is the
_____________ and [A-] is the ____________.
B) carbon - Correct Answers ✅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
,Biochemistry Test bank 1 Exam Question &
Answers 2025
D) lipids - Correct Answers ✅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
B) polysaccharide: glycosidic bond - Correct Answers ✅Which of the
following biopolymers is correctly paired with the bond that forms
between the monomers?
A) protein: ester bond
B) polysaccharide: glycosidic bond
C) DNA: phosphate bond
D) RNA: phosphate bondE)all of the above
D) polysaccharide: energy storage - Correct Answers ✅Which of the
biopolymers is correctly paired with its major function?
A) protein: information encoding
B) nucleic acids: energy storage
C) lipids: information encoding
,Biochemistry Test bank 1 Exam Question &
Answers 2025
D) polysaccharide: energy storage
E) none of the above
A) nucleic acids - Correct Answers ✅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
D) positive; negative - Correct Answers ✅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
A) two ; one H-bond donor, one H-bond acceptor - Correct Answers
✅At any given moment, a single water molecule participates in _____
, Biochemistry Test bank 1 Exam Question &
Answers 2025
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
B) the hydrogen bond will typically form between a hydrogen atom and
either a nitrogen, sulfur, or oxygen atom - Correct Answers ✅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
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