17. Origin Of Life 2

Question 1

What happens in deep sea vents?

Answer 1

Chimney with “black smoke” that are minerals and nutrients coming out
Around chimney host big diversitys of organisms
Iron is,fur clusters are helpful for proteins of life and founds coming out of vents

Question 2

Explain iron sulfur world hypothesis

Answer 2

Iron sulfur and other metals in deep sea vents important catalysts for for organic molecules and could happen before other processes

Question 3

Alkaline hydrothermal vents (white chimneys)

Answer 3

Reactions between sea water and rocks under sea floor produce very alkaline fluids that cause calcium carbonate to precipitate from sea water forming white chimney
Proton gradient across white chimney similar to organic cell membrane

Question 4

Importance of impact craters

Answer 4

Earlyearth had lots more impact (potmprntially Late heavy bombardent look this up
Impact craters can support hydrothermal systems because stays so hot

Question 5

Specilationss of Potential places for prebiotic life to form ?

Answer 5

Beaches -Tidal cycles can concentrate molecules in rocks and react
Volcanic hot springs
Bubbles- concentrates gasses
Cold origin of life

Question 6

Stages for Life to move between a planet and is it possible?

Answer 6

Ejection from planet to escape atmosphere without being so hot it’s streylised
Transfer between space and survive extreme conditions eg cold uv
Transit through new atmosphere
Land on planet with appropriate growth conditions and survive on impact

Is maybe possible as

Inside of meteriote is cold so microbes will not over hear
Early earth maybe could’ve

Question 7

What do we know about Last universal common atmosphere and what does it tell us? (Top down approach)

Answer 7

Inside of meteriote is cold so microbes will not over year
Early earth maybe could’ve

Question 8

Basic requirements for an origin in of life

Question 9

Why we think all life comes fro ma common origin

Answer 9

We all have the same genetic code