The video covers proteins, amino acids, and enzymes, explaining their roles in cellular functions, protein folding, and digestion. It discusses the structure of proteins, the impact of mutations, and the process of protein digestion. Enzymes are highlighted for their role in lowering activation energy and their sensitivity to environmental changes.

Which of the following is NOT a function that requires proteins?

• Oxygen transport

• Photosynthesis

• Facilitated diffusion

• DNA replication

What is the basic building block of proteins?

• Fatty acids

• Amino acids

• Monosaccharides

• Nucleotides

How many different amino acids exist?

• 25

• 20

• 15

• 10

What type of bond forms between amino acids?

• Peptide bond

• Hydrogen bond

• Covalent bond

• Ionic bond

What can result from a single wrong amino acid in a protein chain?

• A disorder like sickle cell disease

• Enhanced protein function

• No effect on the protein

• A completely new protein

What process breaks down polypeptides into amino acids during digestion?

• Oxidation

• Hydrolysis

• Reduction

• Dehydration synthesis

Which structure level involves the interaction of R groups in proteins?

• Quaternary

• Tertiary

• Secondary

• Primary

What is the primary role of enzymes in chemical reactions?

• Lower the energy needed

• Increase the energy needed

• Change the reaction products

• Stop the reaction

What can cause enzymes to denature?

• High fever

• Neutral pH

• Stable temperature

• Low humidity

Which enzyme is responsible for breaking down starch into glucose?

• Amylase

• Protease

• Cellulase

• Lipase