Multiple Choice
Which of the following properties of water is most critical for its role in supporting biochemical processes essential for brain function and consciousness?
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2. Water
Properties of Water
Multiple Choice
Which property of water enables it to effectively transport ions in biological systems?
A
Nonpolar covalent bonding
B
Low specific heat
C
High polarity
D
Low surface tension
Verified step by step guidance1
Understand the question: The problem is asking which property of water allows it to transport ions effectively in biological systems. This requires knowledge of water's chemical properties and how they interact with ions.
Recall the concept of polarity: Water is a polar molecule because of the difference in electronegativity between oxygen and hydrogen atoms. Oxygen has a partial negative charge, while hydrogen has a partial positive charge, creating a dipole moment.
Explain how polarity enables ion transport: Water's high polarity allows it to interact with charged particles (ions). The partial positive charge of hydrogen atoms in water attracts negatively charged ions, while the partial negative charge of oxygen atoms attracts positively charged ions.
Discuss the role of hydration shells: When ions dissolve in water, water molecules surround them, forming hydration shells. This stabilizes the ions and keeps them in solution, enabling transport in biological systems.
Eliminate incorrect options: Nonpolar covalent bonding, low specific heat, and low surface tension do not contribute to ion transport. High polarity is the correct property that facilitates this process.
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