
Introduction:
Arachidonic acids are the regulatory molecules present in the phospholipids of the plasma membrane. They are polyunsaturated omega-6 fatty acids. It is abundant in the brain, muscles, and liver. It is a key inflammatory intermediate and acts as a vasodilator.

Answer to Problem 1E
Correct answer:
Among the answers given, the correct answer is option c) eicosanoids.
Explanation of Solution
Explanation for the correct answer:
The option (c) is eicosanoids. the arachidonic acid is converted into the eicosanoids by the action of certain enzymes. Cyclooxygenase (COX) is required in the conversion of arachidonic acid into the prostaglandins. On the other hand, lipoxygenase is required in the conversion of arachidonic acid into the leukotrienes. The function of eicosanoids is to give an immune response to the body.
Explanation for the incorrect answer:
The option (a) is
The option (b) is thyroid hormones. Thyroid hormones are the thyroxine-based hormones and have precursor thyroglobulin. Hence, this option is incorrect.
The option (d) is steroids. Steroids are the hormones that help in the
The option (e) is peptides. Peptides are the group of amino acids that are linked by the peptide bonds. So, peptides are made up of the amino acid units. Hence, this option is incorrect.
Hence, the arachidonic acid is the raw material for the eicosanoids. So, the correct option is c).
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Chapter 5 Solutions
Principles of Human Physiology Plus Mastering A&P with Pearson eText - Access Card Package (6th Edition)
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