CHEM 210 Biochemistry Module 1 Practice
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2025
Q&A | Instant Download PDF
1. Which of the following is not a macromolecule?
A. Protein
B. Nucleic acid
C. Glucose
D. Polysaccharide
Glucose is a monomer, not a macromolecule. Proteins, nucleic acids,
and polysaccharides are polymers made of smaller units.
2. Which type of bond forms between two water molecules?
A. Ionic bond
B. Covalent bond
C. Hydrogen bond
D. Disulfide bond
, Hydrogen bonds occur between the partially positive hydrogen of
one water molecule and the partially negative oxygen of another.
3. Which macromolecule serves primarily as genetic information
storage?
A. Protein
B. DNA
C. Lipid
D. Polysaccharide
DNA stores hereditary information, while proteins and lipids serve
structural and functional roles.
4. What type of reaction links monomers together to form polymers?
A. Dehydration synthesis
B. Hydrolysis
C. Combustion
D. Redox
Dehydration synthesis removes water to join monomers into
polymers.
5. Which of the following has both hydrophobic and hydrophilic regions?
A. DNA
B. Phospholipid
C. Glucose
D. Amino acid
, Phospholipids have hydrophilic heads and hydrophobic tails, key to
forming membranes.
6. Which element is most abundant in organic molecules?
A. Nitrogen
B. Hydrogen
C. Carbon
D. Phosphorus
Carbon is the backbone of all organic molecules due to its versatile
bonding capacity.
7. Which part of an amino acid is unique to each type?
A. Carboxyl group
B. Amino group
C. R group (side chain)
D. Hydrogen atom
The R group determines the properties and identity of each amino
acid.
8. Which macromolecule is primarily responsible for enzyme activity?
A. Lipid
B. Protein
C. Carbohydrate
D. Nucleic acid
Enzymes are proteins that catalyze biochemical reactions.
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2025
Q&A | Instant Download PDF
1. Which of the following is not a macromolecule?
A. Protein
B. Nucleic acid
C. Glucose
D. Polysaccharide
Glucose is a monomer, not a macromolecule. Proteins, nucleic acids,
and polysaccharides are polymers made of smaller units.
2. Which type of bond forms between two water molecules?
A. Ionic bond
B. Covalent bond
C. Hydrogen bond
D. Disulfide bond
, Hydrogen bonds occur between the partially positive hydrogen of
one water molecule and the partially negative oxygen of another.
3. Which macromolecule serves primarily as genetic information
storage?
A. Protein
B. DNA
C. Lipid
D. Polysaccharide
DNA stores hereditary information, while proteins and lipids serve
structural and functional roles.
4. What type of reaction links monomers together to form polymers?
A. Dehydration synthesis
B. Hydrolysis
C. Combustion
D. Redox
Dehydration synthesis removes water to join monomers into
polymers.
5. Which of the following has both hydrophobic and hydrophilic regions?
A. DNA
B. Phospholipid
C. Glucose
D. Amino acid
, Phospholipids have hydrophilic heads and hydrophobic tails, key to
forming membranes.
6. Which element is most abundant in organic molecules?
A. Nitrogen
B. Hydrogen
C. Carbon
D. Phosphorus
Carbon is the backbone of all organic molecules due to its versatile
bonding capacity.
7. Which part of an amino acid is unique to each type?
A. Carboxyl group
B. Amino group
C. R group (side chain)
D. Hydrogen atom
The R group determines the properties and identity of each amino
acid.
8. Which macromolecule is primarily responsible for enzyme activity?
A. Lipid
B. Protein
C. Carbohydrate
D. Nucleic acid
Enzymes are proteins that catalyze biochemical reactions.
