Question

Which of the following would have been most likely to develop only after the formation of a true cell?

Options

• Autotroph

• Heterotroph

• Microsphere

• Proteinoid

Answer 1

Autotroph

Explanation:

Autotrophs, organisms capable of synthesizing their own food from inorganic substances (like carbon dioxide) using energy (e.g., from light or chemical reactions), require the complex cellular machinery found in true cells. In contrast, heterotrophs (organisms that consume organic molecules), microspheres, and proteinoids could exist as simpler precursors or structures before the evolution of fully functional cells. Biological evolution, including the ability to carry out autotrophy, is thought to have become possible only after the emergence of true cells with defined boundaries and metabolic pathways.