CH CH CH C CH 3 CH CH CH C CH 3 CH CH CH CH C CH 3 CH CH CH C CH 3 CH CH CH

Ch ch ch c ch 3 ch ch ch c ch 3 ch ch ch ch c ch 3 ch

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CH CH CH C CH 3 CH CH CH C CH 3 CH CH CH CH C CH 3 CH CH CH C CH 3 CH CH CH Lycopene C CH 3 CH 2 CH 2 C CH 3 CH 2 CH 2 CH C CH 3 H 3 C CH C CH 3 CH 3 Astaxanthin (C 40 H 52 O 4 ) is a pink pigment found in salmon, trout, lobster and shrimp. C CH CH 2 C C C CH 3 CH 3 CH CH C CH 3 CH CH CH C CH 3 CH CH CH CH C CH 3 CH CH CH C CH 3 CH CH C C C CH CH 2 C CH 3 CH 3 CH 3 Astaxanthin O OH HO O CH 3 (a) Which functional group is found repeatedly throughout the structure of lycopene? (b) Name two additional functional groups that are found in the structure of astaxanthin. (c) Explain why astaxanthin (215°C) has a higher boiling point than lycopene (172°C). CONSUMER CHEMISTRY (H, CHEMISTRY) 13 © Learning and Teaching Scotland 2010
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QUESTIONS Question 10 Tetracycline is an antibiotic that is widely used as an alternative treatment for patients who are allergic to penicillin. It prevents the growth of invading bacteria, allowing the body’s own immune system to fight off infection. C C CH C C CH 2 CH C C C C CH OH O HO CH 3 OH OH O OH C O N N CH 3 CH 3 Tetracycline H H Identify four different types of functional group on the tetracycline structure. 14 CONSUMER CHEMISTRY (H, CHEMISTRY) © Learning and Teaching Scotland 2010
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QUESTIONS Question 11 L -tyrosine is an important building block in the formation of almost all proteins in the body. CH NH 2 C O OH HO CH 2 L-tyrosine Identify three functional groups present in its structure. CONSUMER CHEMISTRY (H, CHEMISTRY) 15 © Learning and Teaching Scotland 2010
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QUESTIONS Question 12 Alanine (2-aminopropanoic acid) is found in meat, fish, seafood and dairy products. CH CH 3 C O OH N alanine H H Which functional groups are present in an alanine molecule? A. Aldehyde, amine and hydroxyl B. Ketone, amine and hydroxyl C. Carboxyl and amine D. Amino acid and hydroxyl 16 CONSUMER CHEMISTRY (H, CHEMISTRY) © Learning and Teaching Scotland 2010
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QUESTIONS Question 13 Aspirin and ibuprofen are common over-the-counter drugs. C OH O O C CH 3 O Aspirin (acetylsalicylic acid) CH 2 CH CH 3 C O OH CH CH 3 CH 3 Ibuprofen Identify the term that can be applied to aspirin but not to ibuprofen. A. Aldehyde B. Ketone C. Carboxylic acid D. Ester CONSUMER CHEMISTRY (H, CHEMISTRY) 17 © Learning and Teaching Scotland 2010
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QUESTIONS Question 14 Cyclohexyne is used in insect repellents. cyclohexyne C C C C C C H H H H H H H H Which of the following would be the best solvent for dissolving cyclohexyne? A. Hexane B. Hexanal C. Hexanol D. Hexanone 18 CONSUMER CHEMISTRY (H, CHEMISTRY) © Learning and Teaching Scotland 2010
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ANSWERS Answers Question 1 Benzaldehyde is an aromatic compound with an almond-like smell, which is used in flavourings and perfumes. Circle and name the functional group on the benzaldehyde molecule below. C H O Benzaldehyde CONSUMER CHEMISTRY (H, CHEMISTRY) 19 © Learning and Teaching Scotland 2010 Carbonyl group
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ANSWERS Question 2 Cholesterol is an important molecule present in the human body. However, high levels of a certain type of cholesterol in the blood are linked with illnesses such as heart disease and strokes.
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