AP Bio - Unit 1 Quiz 2 (Topics 1-3)

Describes the forming of a bond between monomers with the removal of a water molecule.

• Hydrolysis

• Dehydration

Describes the breaking of a bond within a polymer using water.

• Hydrolysis

• Dehydration

Which type of chemical bond is formed when electrons are shared and is a stronger bond that is not easily broken?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Van der Waals force

Which type of water property explains water's ability to stick to other material.

• Cohesion

• Surface tension

• Adhesion

• High specific heat

Water is...

• Polar

• Nonpolar

Large bodies of water do not quickly fluctuate, or change, in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Which of the following is correctly defined as the attraction of the hydrogen from one molecule to the oxygen of a different molecule?

• amphipathic
• hydrophobic
• hydrogen bonding
• adhesion

The property of water that allows water molecules to stick to each other is

• adhesion
• cohesion
• density
• specific heat

Each element is unique and different from other elements because of the number of protons in the nuclei of its atoms. Which of the following indicates the number of protons in an atom's nucleus?

• atomic mass

• atomic weight

• atomic number

• mass number