AP Biology Unit 1 Review

Front

What are hydrogen bonds?

Back

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule.

Front

What is the main source of quick energy in biomolecules?

Back

Carbohydrates.

Front

What process allows carnations to change color when placed in dyed water?

Back

Cohesion and adhesion of water molecules.

Front

What is adhesion in the context of water?

Back

The ability of water to stick to other substances.

Front

Why does ice float on water?

Back

Ice is less dense than liquid water.

Front

What is cohesion in the context of water?

Back

The attraction between water molecules due to hydrogen bonding.

Front

Define polarity in molecules.

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

What is a covalent bond?

Back

A chemical bond that involves the sharing of electron pairs between atoms.

Front

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

Back

It helps regulate temperature in organisms and environments.

Front

What is surface tension?

Back

The cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.