CHEM 210 BIOCHEMISRTY LATEST UPDATED
2026 REAL EXAM 100 QUESTIONS AND
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) RATED A+
General Biochemistry
What is the primary function of biochemistry?
Answer: To study chemical processes in living organisms
Rationale: Biochemistry focuses on the molecular basis of life,
including biomolecules and metabolic reactions.
Which element is most abundant in living organisms?
Answer: Carbon
,Rationale: Carbon forms stable covalent bonds and is the
backbone of organic molecules.
What type of bond links amino acids together?
Answer: Peptide bond
Rationale: Peptide bonds form via condensation reactions
between amino and carboxyl groups.
Which biomolecule stores genetic information?
Answer: Nucleic acids
Rationale: DNA and RNA store and transmit genetic
information.
What is the monomer unit of proteins?
Answer: Amino acids
Rationale: Proteins are polymers made from amino acid
monomers.
Amino Acids & Proteins
, How many standard amino acids are used in protein synthesis?
Answer: 20
Rationale: The genetic code specifies 20 standard amino acids.
Which amino acid contains a thiol group?
Answer: Cysteine
Rationale: The thiol group enables disulfide bond formation.
What level of protein structure is stabilized by hydrogen bonds?
Answer: Secondary structure
Rationale: Alpha helices and beta sheets are stabilized by
hydrogen bonding.
Which structure describes the complete 3D shape of a protein?
Answer: Tertiary structure
Rationale: Tertiary structure results from side-chain
interactions.
What causes protein denaturation?
Answer: Heat or extreme pH
2026 REAL EXAM 100 QUESTIONS AND
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) RATED A+
General Biochemistry
What is the primary function of biochemistry?
Answer: To study chemical processes in living organisms
Rationale: Biochemistry focuses on the molecular basis of life,
including biomolecules and metabolic reactions.
Which element is most abundant in living organisms?
Answer: Carbon
,Rationale: Carbon forms stable covalent bonds and is the
backbone of organic molecules.
What type of bond links amino acids together?
Answer: Peptide bond
Rationale: Peptide bonds form via condensation reactions
between amino and carboxyl groups.
Which biomolecule stores genetic information?
Answer: Nucleic acids
Rationale: DNA and RNA store and transmit genetic
information.
What is the monomer unit of proteins?
Answer: Amino acids
Rationale: Proteins are polymers made from amino acid
monomers.
Amino Acids & Proteins
, How many standard amino acids are used in protein synthesis?
Answer: 20
Rationale: The genetic code specifies 20 standard amino acids.
Which amino acid contains a thiol group?
Answer: Cysteine
Rationale: The thiol group enables disulfide bond formation.
What level of protein structure is stabilized by hydrogen bonds?
Answer: Secondary structure
Rationale: Alpha helices and beta sheets are stabilized by
hydrogen bonding.
Which structure describes the complete 3D shape of a protein?
Answer: Tertiary structure
Rationale: Tertiary structure results from side-chain
interactions.
What causes protein denaturation?
Answer: Heat or extreme pH
