10 Great Evolutionary Innovations- Chapter 4

Question 1

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

Answer 1

Plants & animals do not share a common ancestor

Question 2

What are two characteristic of bacteria?

Answer 2

•Contain other bacteria within
•Live in sophisticated colonies
*Simple shape
•Shape supported by a rigid wall
•Genome copied quickly

Question 3

_______ provide us with evidence of a previous organism.

Answer 3

Fossils

Question 4

Gene Sequencing accurately tells us what is _________.

Answer 4

Related

Question 5

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?

Answer 5

CARL WOESE

Question 6

WHAT IS THE “PRIMITIVE PHAGOCYTE” HYPOTHESIS?

Answer 6

The ancestor of the eukaryotic cell gradually accrued all the characteristics of the modern eukaryotic cell by engulfing them and digesting inwardly.

Question 7

WHAT IS THE “FATEFUL ENCOUNTER” HYPOTHESIS?

Answer 7

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.

Question 8

What were margulis and martins assumptions?

Answer 8

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.

Question 9

The _______ is a series of flattened vesicles, riddled with large pores, that are continuous with other internal membranes inside the cell.

Answer 9

Nucleus