Origin of Life

Question 1

Roughly how long ago did life originate? …did
eukaryotic cells originate? …did animals and plants originate?

Answer 1

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Question 2

What are the 3 metapatterns associated with the
origin of life?

Answer 2

1. centers (genetic info)
2. borders (membrane)
3. webs/networks (metabolism)

Question 3

4 hypotheses of LUCA ?

Answer 3

1. non-cell (on pyrite)
2. protocell (undersea volcanic vents)
3. community (membrane 1st)
4. cell

Question 4

Theories for life origin (3) ?

Answer 4

1. genes 1st (RNA world)
2. metabolism 1st (iron-sulfur world)
3. lipids 1st (need border)

Question 5

Where did life originate (3 theories) ?

Answer 5

1. shoreline/mudflats (Darwin)
2. undersea volcanic vents (microspaces)
3. snowball earth (more stable/less energy than #2)

Question 6

What are the 3 domains of life ?

Answer 6

1. bacteria
2. eukarya
3. archae

Question 7

What are the roles of energy and protected microspaces in the origin of life?