Biological Macromolecules and Enzymes

The video introduces biological macromolecules, highlighting their importance for living organisms. It explains the role of carbon in forming these molecules and describes the structure and function of monomers and polymers. The processes of dehydration synthesis and hydrolysis are detailed, showing how they build and break down polymers. The video also covers the role of enzymes in catalyzing these reactions, with specific examples for carbohydrates, lipids, and proteins. Finally, it concludes with a summary and a preview of future topics.

Which of the following is NOT a major class of biological macromolecules?

• Lipids

• Carbohydrates

• Vitamins

• Proteins

What is the primary element that forms the backbone of macromolecules?

• Hydrogen

• Oxygen

• Carbon

• Nitrogen

What is a monomer?

• A small molecule that can join with others to form a polymer

• A type of lipid

• A large molecule made of repeating units

• A type of enzyme

What process links monomers together to form polymers?

• Hydrolysis

• Reduction

• Dehydration synthesis

• Oxidation

During dehydration synthesis, what molecule is typically removed?

• Nitrogen

• Water

• Oxygen

• Carbon dioxide

What is the process called that breaks down polymers into monomers?

• Condensation

• Polymerization

• Hydrolysis

• Dehydration synthesis

In hydrolysis, what molecule is added to break bonds?

• Carbon dioxide

• Oxygen

• Water

• Hydrogen

What role do enzymes play in chemical reactions?

• They are consumed in reactions

• They speed up reactions

• They act as reactants

• They slow down reactions

Which enzyme is responsible for breaking down lactose?

• Amylase

• Sucrase

• Lactase

• Maltase

What suffix is commonly found in the names of enzymes?

• -ine

• -ose

• -ate

• -ase