10 Great Evolutionary Innovations- Chapter 4 Flashcards
Which one of these statements is false?
Complex cells first emerged 2,000 million years ago
Plants & animals do not share a common ancestor
Complex life did not emerge from bacteria repeatedly
The complex cell that arose from bacteria differs from bacteria
Plants & animals do not share a common ancestor
What are two characteristic of bacteria?
•Contain other bacteria within •Live in sophisticated colonies *Simple shape •Shape supported by a rigid wall •Genome copied quickly
_______ provide us with evidence of a previous organism.
Fossils
Gene Sequencing accurately tells us what is _________.
Related
Who taught us that Eukaryotes possess derived traits from both bacteria and archaea indicating:
The first eukaryote was a chimera, half bacteria and half archaea?
CARL WOESE
WHAT IS THE “PRIMITIVE PHAGOCYTE” HYPOTHESIS?
The ancestor of the eukaryotic cell gradually accrued all the characteristics of the modern eukaryotic cell by engulfing them and digesting inwardly.
WHAT IS THE “FATEFUL ENCOUNTER” HYPOTHESIS?
This hypothesis concludes there was a relatively dramatic origin of the complex cell. The assumption states that the eukaryotic characteristics developed after a union between two or more prokaryotic cells.
What were margulis and martins assumptions?
MARGULIS
Suggested that a bacterial predator forced entry into the innards of other bacteria.
MARTIN
Suggested there was a possible mutual metabolic relationship between the closely knit cells that involved exchanging of raw materials.
The _______ is a series of flattened vesicles, riddled with large pores, that are continuous with other internal membranes inside the cell.
Nucleus