Polysaccharides: Chitin

Polysaccharides: Chitin

Assessment

Interactive Video

Science, Chemistry

University

Hard

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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.

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4 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

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

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

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

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

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

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

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

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