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Hydrogen Bonding in Biology Quiz
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Hydrogen Bonding in Biology Quiz

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Questions and Answers

Why do astrobiologists look for water when looking for extraterrestrial life?

Water is essential for life on Earth and the most abundant molecule in organisms and cells.

What are the structural features that make water unique?

Small size, bent shape, highly polar covalent bonds, and overall polarity.

Why is water considered a very good solvent?

Water is a good solvent due to its ability to dissolve a wide range of substances.

What are the cohesive and adhesive properties of water?

<p>Water molecules exhibit both cohesive (stick to each other) and adhesive (stick to other substances) properties.</p> Signup and view all the answers

How does water's high capacity for absorbing energy before changing benefit living organisms?

<p>The high energy absorption capacity of water helps in maintaining stable temperatures within organisms.</p> Signup and view all the answers

What happens to the density of water when cooled below 4°C?

<p>Water decreases in density when cooled below 4°C.</p> Signup and view all the answers

What are hydrogen bonds and how do they contribute to water's properties?

<p>Hydrogen bonds are weak attractions between the partially negative oxygen and partially positive hydrogen of different water molecules.</p> Signup and view all the answers

How do hydrogen bonds contribute to the surface tension of water?

<p>Hydrogen bonds create surface tension by causing water molecules at the surface to be more strongly attracted to each other.</p> Signup and view all the answers

Explain how water's cohesive properties are essential for plants to transport water from roots to leaves.

<p>Water's cohesive properties allow for capillary action, enabling water to move upward through plant vascular tissues.</p> Signup and view all the answers

How does water's ability to form hydrogen bonds impact its role in biological systems?

<p>Water's ability to form hydrogen bonds allows it to interact with biomolecules and support various biochemical reactions.</p> Signup and view all the answers

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