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

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

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

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

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.

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]

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]

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]

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]

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]