This explanation for life's origin states life did not originate on Earth, but exists throughout the universe and was carried to Earth from someplace else:

This explanation for life's origin states life began in a warm pond or ocean from a combination of chemicals that forms amino acids, which then make proteins:

The formation of complex, self-replicating organic molecules from simpler inorganic molecules through molecular reactions in the oceans during the early history of the Earth:

This explanation for life's origin states life began at the bottom of the oceans where openings in the sea floor release heated mineral-rich water.

A nucleated cell probably engulfed prokaryotes that became various organelles.

Scientists produced this early cell-like material when they synthesized amino acid polymers from water, inorganic molecules, and thermal energy.

These conditions are what the apparatus in this experiment simulated by using electricity, heat, and inorganic molecules to form amino acids.

Which type of cell came first in geologic time?

The theory of Endosymbiosis explains the origin of which organelles (cell structures)?