Biology-chemistry of life test review

Front

What is the universal solvent and why is it called that?

Back

Water is called the universal solvent because it can dissolve more substances than any other liquid due to its polar nature.

Front

Why do lipids not dissolve in water?

Back

Lipids are nonpolar molecules, making them insoluble in water.

Front

What role do hydrogen bonds play in water's temperature regulation?

Back

Hydrogen bonds require more heat to break, allowing water to absorb and retain heat, thus regulating temperature.

Front

What is the significance of water's polarity?

Back

Water's polarity allows it to dissolve various substances, making it essential for biological processes.

Front

What property of water allows water striders to walk on its surface?

Back

Surface tension allows water striders to walk on water by supporting their weight.

Front

How does the specific heat of water affect its evaporation rate compared to salt water?

Back

Salt water evaporates at a slower rate than fresh water due to its lower specific heat.

Front

What is cohesion in the context of water?

Back

Cohesion refers to the attraction between water molecules, which helps maintain water's surface tension.

Front

What is the difference between covalent and hydrogen bonds in water?

Back

Covalent bonds hold the hydrogen and oxygen atoms together in a water molecule, while hydrogen bonds occur between water molecules.

Front

What is capillary action and how does it relate to water?

Back

Capillary action is the ability of water to flow in narrow spaces against gravity, important for water transport in plants.

Front

What is surface tension and how is it created in water?

Back

Surface tension is the elastic-like force at the surface of water caused by cohesive forces between water molecules.