Water and the Fitness of the Environment:
Chapter 3 Study Guide
Campbell Biology: Third Canadian Edition
UOA
BIOL(108)
Detailed Overview:
1. The Molecular Structure of Water and Its Properties
- Polarity of Water Molecules: Understand how the polarity of water molecules contributes to
hydrogen bonding and water's unique properties.
- Cohesion and Adhesion: Explore how water's cohesive and adhesive properties support life,
including capillary action in plants.
- Temperature Regulation: Learn how water's high specific heat and heat of vaporization
regulate temperature in organisms and environments.
- Solvent of Life: Review water's role as a versatile solvent, facilitating chemical reactions and
transport of substances in biological systems.
2. The Role of Water in the Hydrologic Cycle
- Hydrologic Cycle Overview: Understand the movement of water through the environment,
including evaporation, condensation, precipitation, and surface and groundwater flow.
- Water's Role in Weather and Climate: Discuss how water contributes to weather patterns and
climate regulation through its physical properties.
3. Acid-Base Balance and Water
- pH Scale and Buffers: Familiarize with the pH scale, how it measures acidity and basicity, and
the role of buffers in maintaining pH stability in biological systems.
- Ocean Acidification: Examine the impact of increased CO2 on ocean chemistry, marine life,
and ecosystems.
4. Water's Importance to Life
- Biological Significance:
Highlight the importance of water to cellular processes, including its role in hydrolysis and
dehydration synthesis reactions.
Chapter 3 Study Guide
Campbell Biology: Third Canadian Edition
UOA
BIOL(108)
Detailed Overview:
1. The Molecular Structure of Water and Its Properties
- Polarity of Water Molecules: Understand how the polarity of water molecules contributes to
hydrogen bonding and water's unique properties.
- Cohesion and Adhesion: Explore how water's cohesive and adhesive properties support life,
including capillary action in plants.
- Temperature Regulation: Learn how water's high specific heat and heat of vaporization
regulate temperature in organisms and environments.
- Solvent of Life: Review water's role as a versatile solvent, facilitating chemical reactions and
transport of substances in biological systems.
2. The Role of Water in the Hydrologic Cycle
- Hydrologic Cycle Overview: Understand the movement of water through the environment,
including evaporation, condensation, precipitation, and surface and groundwater flow.
- Water's Role in Weather and Climate: Discuss how water contributes to weather patterns and
climate regulation through its physical properties.
3. Acid-Base Balance and Water
- pH Scale and Buffers: Familiarize with the pH scale, how it measures acidity and basicity, and
the role of buffers in maintaining pH stability in biological systems.
- Ocean Acidification: Examine the impact of increased CO2 on ocean chemistry, marine life,
and ecosystems.
4. Water's Importance to Life
- Biological Significance:
Highlight the importance of water to cellular processes, including its role in hydrolysis and
dehydration synthesis reactions.
