E1 Cells and Cell Research

Question 1

What did Urey contribute?

Answer 1

Discovered atmospheric NH3 and CH4 on other planets.

Question 2

What did Oparin argue?

Answer 2

That the earliest planetary atmospheres contain hydrogen, ammonia (NH3), water, and methane.

Question 3

What did Oparin’s experiment form?

Answer 3

Amino acids:
>Alanine
>Aspartic Acid
>Glycine
>Glutamic Acid
and Lactate, acetate, formate and urea.

Question 4

Important molecules and physical conditions favoring live appearance?

Answer 4

CO2 and N2
Little/no free O2
Atmosphere consisted of C,H, O, N. H2, H2S, and CO.
Energy that was present to drive reactions: lightening, UV, volcanic ash.

Question 5

Why was it likely that RNA appeared first as genetic material?

Answer 5

1.Dehydrating amino acids 
   can polymerize into 
   polypeptides.
2. RNA was show to self 
     replicate in non-living 
     conditions.
3. Protective layer provided 
     by bilayer
4. DNA replication also relies 
     on an RNA primer.

Question 6

Where is the energy for ATP stored?

Answer 6

Phosphodiester bond

Question 7

Nucleus

Answer 7

Contains the genetic info for the cell

Site of DNA replication and RNA synthesis

Question 8

Ribosomes

Answer 8

Site of RNA translation into proteins