Chemical evolution started on Earth ____.
A) after the appearance of prokaryotic cells
B) long before any cells emerged
C) after the appearance of eukaryotic cells
D) after the appearance of eukaryotic cells but before the appearance of multicellular organisms
E) after the appearance of multicellular organisms

Question

Chemical evolution started on Earth ____.
A) ​after the appearance of prokaryotic cells
B) ​long before any cells emerged
C) ​after the appearance of eukaryotic cells
D) ​after the appearance of eukaryotic cells but before the appearance of multicellular organisms
E) ​after the appearance of multicellular organisms

Quizplus · Accepted Answer

Chemical evolution refers to the gradual formation of complex organic molecules from simpler inorganic molecules. This process started on Earth long before any cells emerged, approximately 4 billion years ago. The first cells, which were likely prokaryotic, emerged around 3.5 billion years ago, well after the start of chemical evolution.

Chemical Evolution Started on Earth ____