Question

The primitive cells-like colloidal particles capable of growth and division were
(A) Prokaryotes
(B) Coacervates
(C) Eobionts
(D) Chemoautotrophs

Answer 1

Hint: There are various colloidal particles that have been designed for cellular uptake and intracellular transfer inside the biological system.
Different types of colloidal particles and interaction between the particles and cells are highlighted.

Complete answer: Colloids are the substances that consist of particles that are larger than atoms but too small to see in naked eyes.
This substance includes thin films and fibers; they are nano-particles that have the capability to grow and divide as cells. This word is mostly used during evolutionary studies but at present it is less familiar.
Eobionts is a colloid or in other words, hypothetical primordial life form or we can say a chemical precursor to an organism. The coacervates that transformed into the primitive living cells are termed as protobionts.

Now lets us find the solution from the given options:
1. Prokaryotes are the living organisms that are unicellular and consist of cytoplasm, DNA, ribosomes, cell wall, and they lack membrane bound organelles. They are not found as colloidal particles.
2. Coacervates is a colloid that has a viscous liquid phase that might separate them from colloidal particles in addition to a third component.
3. Eobionts is a hypothetical primordial life form or we can say a chemical precursor to an organism. It is a primitive cells-like colloidal particle capable of growth and division.
4. Chemoautotrophs are cells that form energy on their own and also form biological materials from inorganic chemicals. Eobionts are chemoautotrophic in nature.

Hence, the correct option is (C).Eobionts.

Note:Eobionts are protocells that lack chlorophyll and have nucleoproteins. The molecules formed by polymerization and condensation of primitive gases in the sea are the source of carbon and other energy that are useful for first living forms on earth.