Ingredients

for Life

A dusty box, rediscovered after 50 years, sparks a

scientific treasure hunt for the origins of life on Earth.

◆ (^) Compare and contrast the types of bonds used to form molecules.
◆ (^) Diagram the hydrogen bonds that form between water molecules and explain how
those bonds produce the unique properties of water.
◆ (^) Explain the difference between hydrophilic and hydrophobic molecules, and between
acidic and basic molecules.
◆ (^) Predict whether a solution has a high or low concentration of free hydrogen ions by
using its pH number.
◆ (^) Describe the chemical qualities of carbon that make it the basis of life on Earth.
◆ (^) Create a graphic depicting how each of the four main classes of biomolecules and
their subunits are related.
After reading this chapter you should be able to: