Question

Eobionts are also called?
A. pre-cells
B. protocells
C. protobionts
D. all of the above

Answer 1

Hypothetical primordial cells which may act as precursors of living organisms, But in nature there is no such kind of pro-cells are present, and not experimentally proved yet.

Complete answer:
Coacervates are the primitive type of cells which are also called protobionts, eobionts or pre-cells. These are the endogenously ordered, spherical shaped collections of lipids, which help in providing the origin of life theory. Oparin found that if the mixture of protein and polysaccharides are shaken then coacervates are formed. These coacervates show some simple form of metabolism but these things do not possess lipid bilayer structure and do not reproduce and also not fulfilling the criteria of precursor of life. It is a hypothetical cell which acts as precursor of life but a functional eobiont area has not yet been achieved in the lab. Compartmentalization is the important feature in the formation of life. Membrane bounded organelles, self reproductive cells. Several experiments are conducted by various scientists to show the origin of life, one of the most acceptable theories given by oparin and haldane and experimentally conducted by miller and urey.
Miller and Urey show the origin of life through his experiment, in which they use 4 gases ( ${H_2}O$, Methane, $N{H_3}$ and ${H_2}$) and electrical discharges electrodes, which create early earth’s atmosphere. which is reducing in nature that creates some essential building block molecules mainly 5 amino acid names as glycine, $\alpha$-alanine and $\beta$-alanine were positively identified, while aspartic acid and $\alpha$-aminobutyric acid (AABA) were less certain. This miller and urey experiment was hypothesized by Oparin and Haldin theory.

So, the correct answer is option D.

Note: Eobionts are hypothetical precursors for living cells, such do not exist and are not experimentally obtained. Scientists just used this term to define how living simple to complex living organisms came into existence and it may support the origin of life.