Bio Ch 2 Chemistry of Life Review

Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?

• A protein, because it builds muscle mass.

• A lipid because it provides long term energy storage.

• A carbohydrate because it releases energy quickly.

• A protein, because it transports oxygen into the blood stream.

Based on the graph, what temperature does this enzyme work best? 

• 15 C
• 40 C
• 30 C
• 47 C

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Monomers are....

• the smaller building blocks for biomolecules

• the complex components for biomolecules

• the finalizing step to building biomolecules

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  
• This enzyme works best in highly acidic environments
  
• The enzyme’s activity increases as pH increases 7.0 to 9.0
  
• The enzyme’s activity is greater around pH of 8.0 .
  

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Letter B...

• active site
• enzyme
• substrate
• products

The main job of carbohydrates is

• Weight gain

• Main energy source

• Genetic material

• Muscle development

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Identify the element found in a protein that is not present in a carbohydrate

• Carbon
• Oxygen
• Hydrogen
• Nitrogen