Question

1. scientists have proposed theories to explain how eukaryotic cells became complex over time. the table compares two of the theories. cell complexity theories endosymbiotic theory autogenous theory - sees eukaryotes evolving direct - claims some organelles evolved from a prokaryote ancestor from symbiotic relationships - claims eukaryotic cells were with prokaryotic ancestors created by infoldings of the - mainly applies to mitochondria plasma membrane and chloroplasts - mainly applies to the endoplasmic reticulum, golgi body, and single - membrane - bound organelles - proposed in 1967 by klein and - presented in 1970 by uzzell and cronquist spolsky which conclusion is shared by both theories to explain cell complexity? membrane - bound organelles like the golgi body are less complex than mitochondria. cells became less complex by joining together with other cells. mitochondria developed before chloroplasts in complex eukaryotic cells. complex eukaryotic cells developed from simpler prokaryotic cells.

Explanation:

Step1: Analyze Endosymbiotic Theory

The Endosymbiotic Theory claims some organelles evolved from symbiotic relationships with prokaryotic ancestors mainly for mitochondria and chloroplasts, and implies complex eukaryotic cells developed from simpler prokaryotic cells through these symbiotic events.

Step2: Analyze Autogenous Theory

The Autogenous Theory says eukaryotes evolved directly from a prokaryote ancestor and that some eukaryotic cells were created by infoldings of the plasma membrane, also suggesting a development from simpler prokaryotic - like ancestors to more complex eukaryotic cells.

Step3: Find common conclusion

Both theories suggest that complex eukaryotic cells developed from simpler prokaryotic cells.

Answer:

Complex eukaryotic cells developed from simpler prokaryotic cells.