Enzymes and Protein Functions

This video tutorial covers the basics of proteins, including their synthesis from amino acids at the ribosome. It explores the five main types of proteins: structural, hormones, antibodies, receptors, and enzymes, using the mnemonic 'SHARE'. The video delves into enzyme functionality, explaining their role in speeding up chemical reactions and their properties, such as being unchanged during reactions. It discusses enzyme reactions, including degradation and synthesis, and the importance of optimum conditions for enzyme activity. The tutorial concludes with a review and example questions.

What are proteins made of?

• Fatty acids

• Monosaccharides

• Amino acids

• Nucleotides

Which of the following is NOT a group of proteins?

• Receptors

• Hormones

• Antibodies

• Lipids

What is the role of antibodies?

• Store genetic information

• Speed up chemical reactions

• Defend against pathogens

• Transport oxygen

What is a unique feature of enzymes during a chemical reaction?

• They remain unchanged

• They change shape permanently

• They become inactive

• They are consumed

What must an enzyme bind to in order to function?

• A carbohydrate

• A lipid

• A nucleic acid

• A substrate

What type of reaction involves breaking down large molecules into smaller ones?

• Oxidation reaction

• Hydration reaction

• Degradation reaction

• Synthesis reaction

Which enzyme is responsible for breaking down starch into maltose?

• Protease

• Amylase

• Phosphorylase

• Lipase

What is the opposite of a degradation reaction?

• Hydrolysis reaction

• Synthesis reaction

• Condensation reaction

• Reduction reaction

What happens to an enzyme when it is denatured?

• It changes shape

• It speeds up

• It multiplies

• It becomes more active

What is the term for the best conditions under which an enzyme works?

• Optimal conditions

• Standard conditions

• Maximum conditions

• Neutral conditions