Biomolecules and Enzymes Lesson

Multiple Choice

Which type of biomolecule is an enzyme?

• Carbohydrate

• Protein

• Lipid

• Nucleic Acid

Multiple Choice

What is another name for a protein?

• Polypeptide
• Carbohydrate
• Cofactor

• Amino acid

Multiple Choice

Do enzymes speed up or slow down chemical reactions?

• Enzymes speed up chemical reactions.
• Enzymes slow down chemical reactions.

Multiple Choice

What do we call the energy needed to start a chemical reaction?

• Catalytic energy
• Thermal energy

• Activation Energy

• Potential energy

Multiple Choice

How do enzymes speed up chemical reactions?

• Enzymes increase the activation energy required for reactions.
• Enzymes act as catalysts by consuming reactants.
• Enzymes speed up chemical reactions by lowering the activation energy.
• Enzymes slow down chemical reactions to maintain stability.

Multiple Choice

Are enzymes changed in the process of chemical reactions?

• Yes, enzymes are destroyed after each reaction.

• No, enzymes are not changed permanently in the process of chemical reactions.

Multiple Choice

What do we call anything that speeds up a chemical reaction?

• Protein
• Hormone
• Lipid

• Catalyst