Water Properties Biology Quiz Form
Test your knowledge of water's unique biological properties in this minimal, elegant quiz. All questions are required.
Which of the following best describes the polarity of a water molecule?
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It is nonpolar
It is polar with a partial negative charge on oxygen
It is polar with a partial positive charge on oxygen
It is ionic
Water has a high specific heat capacity. What is the biological significance of this property?
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It allows organisms to maintain stable internal temperatures
It makes water a good solvent for nonpolar substances
It increases the rate of evaporation
It causes water to freeze at high temperatures
Select all properties of water that contribute to its role as the "universal solvent".
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Polarity
Hydrogen bonding
High surface tension
Low boiling point
Which property of water explains why ice floats on liquid water?
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Cohesion
Density anomaly
Adhesion
Capillarity
How does water's cohesion benefit living organisms?
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It enables water transport in plants
It prevents water from evaporating
It increases water's acidity
It allows water to dissolve lipids
Which of these statements about water's surface tension is correct?
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It is lower than most liquids
It is due to hydrogen bonding among water molecules
It does not affect living organisms
It is caused by ionic bonds
Rate your confidence in your understanding of water's biological properties.
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3
4
5
Match the water property to its biological effect.
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Rows
Property
Helps water move up plant stems
Cohesion
Adhesion
High specific heat
Solvent ability
Stabilizes organism temperature
Cohesion
Adhesion
High specific heat
Solvent ability
Allows nutrients to dissolve in blood
Cohesion
Adhesion
High specific heat
Solvent ability
Enables water droplets to form
Cohesion
Adhesion
High specific heat
Solvent ability
Which of the following is NOT a property of water essential for life?
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High heat of vaporization
Low density as a solid
Ability to dissolve gases
High compressibility
In your own words, briefly describe why water is vital to biological systems.
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