Question

Who created coacervates artificially in laboratory for the first time? Enumerate their characteristics. What do they confirm about the origin of life?

Answer 1

Sydney Fox was the first person who created coacervates artificially in the laboratory. While Oparin referred to such larger colloidal masses as coacervates, Sydney Fox used the term “microspheres” for similar water-bound colloid droplets.

Characteristics of coacervates:

1. They are aggregates of large complex organic molecules.
2. Coacervates are capable of growth and replication.
3. They contain more than one type of protein, nucleoproteins, and other organic and inorganic molecules in various combinations.
4. Coacervates are colloidal and have been considered as precursors of the first organisms, i.e., prebiotic structures.
5. They can be surrounded by limiting membranes formed by organized molecules like fatty acids (lecithin and cephalin).
6. Coacervates can absorb organic substances from the surrounding medium, further accumulating various substances inside.

What coacervates confirm about the origin of life:

1. Coacervates support the concept that life could have originated from non-living organic molecules aggregating into complex colloidal structures.
2. They indicate a step toward cellular individuality and complexity leading to the first living cells.
3. These structures demonstrate a potential pathway from simple molecules to organized, life-like systems supportive of the Oparin-Haldane theory of the origin of life.