Q. In the origin of life, microspheres are most primitive protobiont, which have a membrane of
A) Lipids and proteins
B) Lipids
C) Carbohydrates
D) fats
Explanation
The covering membrane can be of the lipid bilayer if the mixture contains lipids and corresponding to cell membrane. Sydney Fox (1950) heated a dry mixture of amino acids to$130{^\circ} - 180{^\circ}C$. It formed proteins or polypeptides. The latter were cooled in water. It produced protenoid microspheres of $1 - 2\mu m$diameter.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.