Polysaccharides: Chitin

The video explores chitin, a polymer of carbohydrates, comparing it to cellulose. It details chitin's structure, highlighting its repeating units of N-acetyl glucosamine and its unbranched, homopolymer nature. The video discusses chitin's presence in insect exoskeletons and its strong, resilient properties due to hydrogen bonding. It explains the beta 1-4 linkage pattern and why humans cannot digest chitin, unlike alpha-linked carbohydrates like starch. The video concludes with a discussion on the role of microorganisms in digesting beta-linked polymers in some animals.

How does the structure of chitin contribute to its strength and resilience?

What is the difference between homopolymers and heteropolymers as mentioned in the text?

Describe the linkage pattern in chitin and how it contributes to its stability.

What happens to the structure of chitin when it is exposed to stomach acid?