QUESTION 1

Answer
Which of the following properties of water molecules is crucial for maintaining
homeostasis within living organisms?
A. Adhesion
B. Solvent properties
C. Thermal properties
D. Cohesion
QUESTION 2
Answer
What is the primary role of lipids in the cellular membrane structure?
A. Provide energy
B. Act as enzymes
C. Form a bilayer
D. Store genetic information
QUESTION 3
Answer
Which of the following is a function of monosaccharides in living organisms?
A. Insulation
B. Energy storage
C. Immediate energy source
D. Genetic information storage
QUESTION 4
Answer
How does the structure of water contribute to its role in biochemical reactions?
A. High heat capacity
B. Ability to form hydrogen bonds
C. Nonpolar nature
D. Low density in solid form
QUESTION 5
Answer
Which of the following statements about the importance of molecular biology
in genetics is correct?
A. It studies the interaction between different species.
B. It focuses solely on the structure of DNA.
C. It explores the molecular basis of gene expression.
D. It investigates the ecological role of genes.
QUESTION 6
Answer
a) Explain the significance of water's properties, such as cohesion and adhesion, in
maintaining homeostasis within living organisms. [4]
b) Discuss how the thermal properties of water contribute to the moderation of
temperature and the protection of organisms in varying environmental conditions. [3]
QUESTION 7
Answer
a) Describe the molecular structure of monosaccharides and explain how they can
combine to form disaccharides and polysaccharides. [4]
b) Discuss the role of lipids in energy storage and insulation within organisms. [3]
QUESTION 8
Answer
a) Define the concept of molecular biology and discuss its importance in
understanding genetics, health, and diseases. [4]
b) Explain how the solvent properties of water are essential for biochemical reactions
within living organisms. [3]
QUESTION 9
Answer
a) Elaborate on the structure and properties of lipids and how these contribute to
their role in membrane structure. [4]
b) Discuss the significance of the amphipathic nature of phospholipids in forming the
lipid bilayer of cell membranes. [3]
c) Explain how variations in temperature can affect the fluidity and stability of the cell
membrane. [3]
QUESTION 10
Answer
a) Define the term ‘molecular biology’ and outline its relevance in studying genetics
and diseases. [3]
b) Describe the structure of water molecules and explain how this structure
contributes to water’s properties, such as cohesion and adhesion. [4]
c) Discuss the role of water’s thermal properties in maintaining homeostasis within
living organisms. [3]
QUESTION 11
Answer
Which type of carbohydrate is primarily involved in energy storage?
A. Monosaccharides
B. Disaccharides
C. Polysaccharides
D. Oligosaccharides
QUESTION 12
Answer
What is the significance of molecular biology in the context of diseases?
A. It studies ecological relationships.
B. It identifies molecular causes of diseases.
C. It focuses on the evolutionary aspects of diseases.
D. It investigates the physical structure of pathogens.
QUESTION 13
Answer
Which property of water is essential for its role as a universal solvent?
A. Cohesion
B. High heat capacity
C. Polarity
D. Adhesion
QUESTION 14
Answer
Which of the following is a characteristic of lipids?
A. Soluble in water
B. Formed by peptide bonds
C. Involved in quick energy release
D. Provide insulation
QUESTION 15
Answer
How does the study of molecular biology contribute to advancements in
health?
A. By focusing on ecological balance
B. By exploring evolutionary relationships
C. By developing molecular-level therapies
D. By studying the physical properties of molecules
QUESTION 16
Answer
a) Discuss the structure of monosaccharides and how they combine to form
polysaccharides. [3]
b) Explain the significance of polysaccharides in energy storage and structural
support in plants and animals. [4]
c) Describe how the properties of lipids make them suitable for energy storage and
insulation. [3]
QUESTION 17
Answer
a) Outline the concept of molecular biology and its implications for health and
medicine. [3]
b) Discuss how the solvent properties of water facilitate biochemical reactions within
cells. [4]
c) Explain the role of disaccharides and polysaccharides in energy storage and
transport in living organisms. [3]
QUESTION 18
Answer
a) Define molecular biology and discuss its significance in understanding the
molecular mechanisms of genetics. [3]
b) Elaborate on the structure of water and how this structure contributes to its
cohesive and adhesive properties. [4]
c) Explain the role of these properties of water in the transport of nutrients and waste
in plants and animals. [3]
d) Discuss how the thermal properties of water are essential for the survival of
aquatic organisms in different environments. [4]
QUESTION 19
Answer
a) Discuss the structure of monosaccharides and how they combine to form complex
carbohydrates like polysaccharides. [4]
b) Explain the significance of polysaccharides in plants and animals, focusing on
their roles in energy storage and structural support. [4]
c) Describe the molecular structure of lipids and discuss how this structure
contributes to their function in energy storage and insulation. [3]
d) Elaborate on the importance of lipids in forming the structure of cell membranes
and how they contribute to membrane fluidity. [3]
QUESTION 20
Answer
a) Outline the concept of molecular biology and its application in studying health and
diseases. [3]
b) Discuss the solvent properties of water and explain how this facilitates biochemical
reactions within living organisms. [4]
c) Describe the structure of disaccharides and explain their role in energy transport in
plants. [3]
d) Discuss the structure and functions of lipids, focusing on their role in energy
storage and as components of cell membranes. [4]