[Solved] Which of the following is not a characteristic of most fatty acids? A) Presence of trans double bonds. B) Even number of carbon atoms. C) Only one carboxyl ( − COOH) group. D) Absence of conjugated double bonds. E) All of these characterize lipids. Estrogen: A group of sex hormones crucial for the development and functioning of female reproductive tissues, and also involved in various other body processes. Testosterone: A steroid hormone that is the primary male sex hormone, responsible for the development of male secondary sexual characteristics. Pornography: Material designed to stimulate sexual excitement through the depiction of sexual activities or content. Initiate Sex: The act of starting sexual activity or making moves that suggest the desire for sexual engagement.