Lecture 1

Question 0

Hypothetical model for origin of eukaryotic cell

Answer 0

1. An Archeon from TACK group loses cell wall
2. Actin cytoskeleton is altered for phagocytosis
3. Phagocytosis of numerous bacteria and archea with transfer if some DNA to the nucleoid
4. Development of protective membrane system around nucleoid and uptake of bacterial endosymbiont that maintains its independence as the mitochondrion
5. Mitochondria multiply in primitive eukaryotic cell

Question 1

TACK group of archea

Answer 1

Group of archea that have proteins in common with eukaryotes, suggesting that first eukaryotic cells are derived from that group of archea