Unit Test Answers

Which statement describes how enzymes and substrates are related?

What would happen to life on Earth if all the liquid fresh water were used up?

The diagram shows two water molecules. What does the dotted line between the water molecules represent?

Sublimation is the opposite of deposition just as evaporation is the opposite of

A dietician examines the diet of a patient who is complaining that he is unable to build muscle mass. The patient eats mainly fresh fruits, vegetables, pasta, bread, and some fats and oils. Which type of supplement will the dietician most likely recommend?

By which process do plants obtain carbon from the atmosphere?

Which shows the most direct path that carbon can take through the carbon cycle?

How does a catalyst influence a chemical reaction?

Which component is affected when a catalyst is added to a chemical reaction?

By which process does water vapor become a cloud?

Which reaction is exothermic?

Which macromolecule is the main source of energy for living things?

Which statement describes one way that RNA differs from DNA?

Which process is performed by both plants and animals to break down sugars to provide energy in the form of ATP?

Which type of macromolecule is made up of subunits that are called amino acids?