Biomolecules & Enzymes

Which best explains how the structure of enzymes is related to their function?

• Enzyme structures release the energy in their substrates.

• Enzyme structures react with their substrates.

• Enzymes’ unique active site allows it to fit with only one substrate molecule.

• Enzymes interact with their substrates like welders building a steel skyscraper.

Which best describes the importance of lipids to organisms?

• They provide keratin in hair and outer layers of the skin.

• They keep cellular organelles hydrated within an organism.

• They provide storage for cellular waste within an organism.

• They serve as cellular membrane components and as concentrated energy storage.

Which of these statements describes how monomers combine and create macromolecules?

• Amino acids combine to make proteins.

• Glucose molecules combine to make nucleic acids.

• Nucleic acids combine to make starch.

• Proteins combine to make glucose.

Which biomolecule is responsible for insulation and long term energy storage?

• Protein
• Nucleic Acid
• Lipid
• Carbohydrate

Which biomolecule includes sugars, cellulose and starch?

• Lipids
• Proteins
• Carbohydrates
• Nucleic Acid

Which biomolecule is your main source of energy?

• Nucleic Acid
• Protein
• Lipid
• Carbohydrate

Enzymes are considered to be 

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid

What is the purpose  of an enzyme?

• Give permission for the reaction

• Raise activation energy, which speeds up reactions

• Lower activation energy, which speeds up reactions

• Control how many reactions occur

Letter D in the picture is...

• active site
• enzyme
• substrate
• products

The enzyme known as ‘catalase’ is involved in the breakdown of hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the ‘catalase’?

• The enzyme would become products: O2 and H20
  
• The enzyme would be fully used up and discarded.
• The enzyme would remain unchanged in any way.
• The enzyme would become a new type of enzyme.