Ib Biology

How does hydrogen bonding contribute to the unique properties of water?

• Hydrogen bonding in water molecules leads to high cohesion, surface tension, and the ability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, low surface tension, and the ability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, low surface tension, and the inability to absorb heat.

• Hydrogen bonding in water molecules leads to low cohesion, surface tension, and the inability to absorb heat.

How does water play a crucial role in biological systems?

• Water is the main component of cells and is involved in various metabolic processes.

• Water is harmful to biological systems.

• Water is only important for hydration.

• Water has no role in biological systems.

Tags

NGSS.HS-LS2-5

What is the significance of the high specific heat capacity of water in living organisms?

• Protection against extreme temperatures.

• Temperature regulation and stabilization of internal body temperature.

• Enhancement of metabolic reactions.

• Transportation of nutrients and waste products.

Describe the process of cohesion and adhesion in water.

• Cohesion is the attraction between water molecules, causing them to stick together. Adhesion is the attraction between water molecules and other substances, causing them to stick to surfaces.

• Cohesion is the attraction between water molecules, causing them to stick to surfaces. Adhesion is the attraction between water molecules and other substances, causing them to stick together.

• Cohesion is the attraction between water molecules, causing them to repel each other. Adhesion is the attraction between water molecules and other substances, causing them to repel from surfaces.

• Cohesion is the repulsion between water molecules, causing them to separate. Adhesion is the repulsion between water molecules and other substances, causing them to separate from surfaces.

What is the role of water in maintaining temperature regulation in organisms?

• Water acts as a coolant and facilitates heat transfer through processes like sweating and evaporation.

• Water has no role in maintaining temperature regulation in organisms.

• Water acts as an insulator and traps heat within the body.

• Water absorbs heat from the environment and raises the body temperature.

Explain the importance of water in the transport of nutrients and waste in living organisms.

• Water is essential for the transport of nutrients and waste in living organisms.

• Nutrients and waste can be transported without the presence of water.

• Water is only important for the transport of nutrients, not waste in living organisms.

• Water has no role in the transport of nutrients and waste in living organisms.

Tags

NGSS.HS-LS1-3

What are the three main properties of water?

• solid, low specific heat capacity, buoyancy

• gas, low specific heat capacity, viscosity

• liquid, high specific heat capacity, surface tension

• solid, low specific heat capacity, adhesion

Tags

NGSS.HS-ESS2-5

Explain the concept of polarity in water molecules.

• Absence of electrical charge within the molecule

• Equal distribution of electrical charge within the molecule

• Uneven distribution of electrical charge within the molecule

• Polarity refers to the shape of the water molecule

Why is water considered a universal solvent?

• Water is considered a universal solvent because it is made up of many different elements.

• Water is considered a universal solvent because it is highly acidic.

• Water is considered a universal solvent because it has a low boiling point.

• Water is considered a universal solvent because it has the ability to dissolve a wide variety of substances due to its polar nature.

Hydrophilic means...

• water-loving

• water-fearing

• nonpolar

• lipid soluble