3. Water

Which statement highlights a unique role of water in a biological system?

Which of the following best describes the defining characteristic of the water cycle?

Which of the following best describes one way in which water is present at Iguazú Falls?

Why is water considered essential for metabolic reactions in living organisms?

Which of the following is a primary function of liquid water in biological systems?

Which of the following properties of water explains its ability to dissolve many substances and act as a universal solvent?

Which characteristic of water makes it an important substance on Earth as a universal solvent?

Water is a very versatile solvent because water molecules are __________.

How does the polarity of water contribute to its ability to dissolve so many substances?

What is the most serious effect of water pollution created by human activity?

A mole of ethyl alcohol weighs 46 g. How many grams of ethyl alcohol are needed to produce 1 L of a 2-millimolar (2 mM) solution?

Why is water often referred to as the 'universal solvent' in biological systems?

How does water's ability to conduct electricity relate to its importance for life?

What is the main component of all body fluids?