BMSC210 CH3.2 Flashcards
What is the key concept of cell theory?
Cells are the basic unit of life
What is endosymbiotic theory?
Theory that explains the origin of eukaryotic cells
What evidence supports endosymbiotic theory?
Presence of organelles with double-membranes in eukaryotic cells
What are the two basic tenets of modern cell theory?
All cells come from other cells. Cells are the fundamental units of organisms.
Who first used the term ‘cells’?
Robert Hooke
What was the name of Robert Hooke’s work where he published his illustration of cells?
Micrographia
Who published the endosymbiotic hypothesis regarding the origins of mitochondria and chloroplasts?
Lynn Margulis
What did Margulis argue in her publication?
Eukaryotic organelles are of prokaryotic origin.
What type of cells did advances in microscopy allow scientists to differentiate?
Prokaryotic and eukaryotic cells.
What were some eukaryotic organelles that Margulis focused on?
Mitochondria and chloroplasts.
What is the endosymbiotic theory?
Mitochondria and chloroplasts evolved from prokaryotic cells in a symbiotic relationship with eukaryotic hosts.
Who proposed the endosymbiotic theory?
Lynn Margulis
What evidence supports the endosymbiotic theory?
Genetic evidence from DNA sequencing
What does recent genetic research suggest about the relationship between eukaryotes and archaea?
Eukaryotes are most closely related to archaea within the TACK superphylum
Where do eukaryotes emerge from in the proposed two domain tree of life?
Within the archaeal domain
