IGNOU BBCCT 101 2026 - Describe the role of lipids as signaling molecules, cofactor

Question

Describe the role of lipids as signaling molecules, cofactors, and pigments.

10 Feb 2026

Answer :

Word Count : 262

Lipids perform diverse and dynamic roles in living systems beyond serving as structural components of membranes and energy reserves. As signaling molecules, certain lipids act as key mediators in cell communication and regulation. Steroid hormones such as estrogen, testosterone, and cortisol are derived from cholesterol and easily diffuse across cell membranes to bind intracellular receptors, influencing gene expression and regulating metabolism, growth, and reproduction. Eicosanoids, including prostaglandins, thromboxanes, and leukotrienes, are derived from arachidonic acid and function in inflammation, immune responses, blood clotting, and smooth muscle

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