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Chapter 28: Problem 87

Which of the following fatty acids is unsaturated? (a) palmitic acid; (b) oleic acid; (c) lauric acid; (d) stearic acid; (e) none of these.

Short Answer

Expert verified
Among the listed fatty acids, oleic acid is unsaturated.

Step by step solution

01

Examine Fatty Acid Structures

Examine the structures of each of the listed fatty acids. Palmitic acid, lauric acid and stearic acid are all saturated fatty acids, which means they do not have double bonds – their structure consists only of single bonds between the carbon atoms. However, oleic acid is an unsaturated fatty acid and it has one double bond in its structure.

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Most popular questions from this chapter

Write the structures of the different tetrapeptides that can be obtained from a combination of alanine, lysine, serine, and phenylalanine. Give the abbreviated formula of each (such as Ala-Lys-Ser-Phe), starting at the N-terminal end.

For the polypeptide Met-Val-Thr-Cys, (a) write the structural formula; (b) name the polypeptide. [Hint: Which is the N-terminal, and which is the C-terminal amino acid?]

The \(R\) group \(-\mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\) is that of what amino acid? (a) alanine; (b) serine; (c) threonine; (d) arginine; (e) none of these.

Write the structures of (a) the different tripeptides that can be obtained from a combination of alanine, serine, and lysine; (b) the tetrapeptides containing two serine and two alanine amino acid units.

The coagulation of egg whites by boiling is an example of (a) saponification; (b) inversion of a sugar; (c) hydrolysis of a protein; (d) denaturation of a protein; (e) condensation of amino acids.
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