Topic 4: I 4 Steps Of Abiogenesis

Question 1

What are the four steps of abiogenesis?

Answer 1

1)abiotic synthesis of monomers
2)synthesis of macromolecules
3)formation of photocells
4)appearance of self-replication

Question 2

A)abiotic synthesis of monomers
What are the 4 requirements for ABIOTIC SYNTHESIS

Answer 2

1)little or no free oxygen (oxygen makes bonds break, which we DON’T want)
2)source of energy
3)presence of chemical building blocks (CHON)(carbon, hydrogen, Oxygen, and nitrogen)
4)Time: for molecules to react to one another

Question 3

B)synthesis of macromolecules

Answer 3

-formation of polymers from monomers (protein or RNA). (MONOMERS BECOME POLYMERS)
-monomers polymerize on hot sand or rock. (THEY POLYMERIZE ON HOT SAND AND ROCK)
-negative ions bond monomers.

Question 4

C)Formation of Protocells

Answer 4

Lipids spontaneously form vesicles (Vesicle is a container(vessel/vesicle)) (Lipids make pockets)

Question 5

C)formation of Protocells
How do organic polymers exhibit attributes of living cells?
What processes do they do?

Answer 5

They spontaneously form vesicles
They perform
1)osmosis. (Diffusion of molecules through semi-permeable barriers)
2)homeostasis (remember from anatomy, almost everything needs homeostasis to exist)
3)divide. (Poly-many-divide into many)

Question 6

4 steps of Abiogenisis
D)appearance of self replication
What appears in Protocells?
What is it capable of?

Answer 6

RNA=nucleic acid in protocells
Capable of -self replication
-catalyze protein synthesis: ribozymes

Question 7

Which came first DNA or RNA?
Which ones more stable?

Answer 7

RNA came first however DNA is more stable and it evolved later

Question 8

What is a catalyst?

Answer 8

Something that lowers the energy required to perform a process