A2.1 Origin of cells Flashcards
1
Q
Hershey-Chase experiment
A
Labeled DNA with radioactive phosphorus and protein with radioactive sulfur
2
Q
Conditions for life - early atmosphere
A
Hot, wet, high concentrations of CO2, no oxygen
3
Q
RNA first hypothesis
A
RNA was the first genetic material on Earth, because RNA can both store genetic information and is capable of self-replication.
4
Q
Hershey-Chase Phosphorus location
A
Phos. (DNA) was found in the pellet → DNA entered the bacterial cells.
5
Q
Hershey-Chase Sulfur location
A
Sulfu. (protein) was in the supernatant → Protein did not enter the cells.
