IB Biology Human Physiology

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.

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.

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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.

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What does the term 'anatomy' refer to?

• The study of diseases

• The study of cell function

• The study of the structure of the human body

• The study of body function

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the specific body failure that leads to a person's death

• mechanism of death

• decomposition

• manner of death

• cause of death

How does water participate in chemical reactions within cells?

• Water acts as a solvent and facilitates transport and metabolic reactions.

• Water acts as a fuel and provides energy for chemical reactions within cells.

• Water acts as a barrier and prevents chemical reactions within cells.

• Water acts as a catalyst and speeds up chemical reactions within cells.

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 

• Hydrophobic Head, Hydrophilic Tail 

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 

• phospholipid 

• Carbohydrate

• Cholesterol 

• Protein 

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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