_____________ are fat-soluble signal molecules that are derived from cholesterol. A) Cholesterases B) Glycogens C) Proteinoids D) Steroids
Answers
Answer:
The correct answer would be D) Steroids.
Steroids are organic compounds which are soluble in fats and are consist of four carbon rings. Three out four rings are of 6 carbon atoms and one ring consists of 5 carbon atoms.
They vary by the attachment of different functional groups to theses rings in different steroids.
Cholesterol is used as a precursor for synthesis of most of the steroids. Steroids mainly serve as signal transduction molecule by which they regulate various aspects of the body such as growth, development of secondary sexual characters, metabolism regulation (such as cortisol regulates carbohydrate metabolism) etc.
The receptors for steroidal transduction molecules are present within the cell; either in the cytoplasm or on the nuclear membrane. After binding to the receptor, they are taken into the nucleus where they bring about the change in terms of expression or inhibition of particular gene.
