AP Bio Insta-Review Topic 1.1: Structure of Water & H Bonding

Front

What is the property of water responsible for evaporative cooling?

Back

Specific heat is the property of water that allows it to absorb a lot of heat before its temperature rises, which helps in evaporative cooling.

Front

What property of water allows lake life to survive during winter?

Back

Water is less dense as a solid (ice) than as a liquid, allowing ice to float and insulate the water below, protecting aquatic life.

Front

What property of water is responsible for water movement up the stem of plants?

Back

Adhesion and cohesion are the properties of water that allow it to move against gravity in plants through capillary action.

Front

Where are hydrogen bonds found in nucleic acids?

Back

Hydrogen bonds are found between nitrogenous bases in nucleic acids, holding the two strands of DNA together.

Front

What type of bond is found in water molecules?

Back

Covalent bonds are found in water molecules, where oxygen shares electrons with two hydrogen atoms.

Front

Define cohesion in the context of water.

Back

Cohesion is the attraction between water molecules due to hydrogen bonding, which allows water to form droplets.

Front

Define adhesion in the context of water.

Back

Adhesion is the attraction between water molecules and other substances, which helps water to climb up plant stems.

Front

What is the significance of water's high specific heat?

Back

Water's high specific heat helps regulate temperature in the environment, making it crucial for climate and living organisms.

Front

Explain the concept of surface tension in water.

Back

Surface tension is the cohesive force at the surface of water that allows it to resist external force, enabling small objects to float.

Front

What is the role of hydrogen bonds in water's unique properties?

Back

Hydrogen bonds contribute to water's high specific heat, surface tension, and its ability to dissolve many substances.