GCSE Chemistry - Naturally Occurring Polymers - Polypeptides, DNA, and Carbohydrates #61

The video tutorial explains natural polymers, focusing on polypeptides, DNA, and carbohydrates. It details the structure and function of amino acids, proteins, and DNA, highlighting the importance of functional groups in forming polymers. The tutorial also covers the structure of nucleotides and the role of carbohydrates in energy storage.

What are the three types of natural polymers discussed in the video?

• Polypeptides, DNA, and carbohydrates

• Proteins, lipids, and nucleic acids

• Starch, cellulose, and glycogen

• Glucose, fructose, and sucrose

What is formed when amino acids are linked together in a long chain?

• A lipid

• A nucleotide

• A carbohydrate

• A polypeptide

Which two functional groups are crucial in the structure of an amino acid?

• Carboxyl and amino groups

• Phosphate and sulfhydryl groups

• Carbonyl and ether groups

• Hydroxyl and methyl groups

What is the name of the bond formed between amino acids?

• Ester bond

• Glycosidic bond

• Hydrogen bond

• Peptide bond

What are the four bases found in DNA nucleotides?

• A, T, G, U

• A, U, G, C

• A, T, G, C

• A, C, G, U

What is the structural form of DNA?

• Quadruple helix

• Triple helix

• Double helix

• Single helix

Which of the following is a polysaccharide?

• Sucrose

• Starch

• Glucose

• Fructose