#Question id: 16956
#Unit 4. Cell Communication and Cell Signaling
#Question id: 3817
#Unit 3. Fundamental Processes
DNA replication is studied in a newly discovered bacterium. It takes 30 min for the bacterium to complete a round of replication at 37oC. A Meselson-Stahl-type experiment was performed. The bacteria were grown for several generations in 14N-medium and then switched to 15N-medium. The DNA molecules were then analyzed.
If the mechanism of DNA replication in this bacterium were dispersive, what results would be found when the double-stranded DNA was analyzed in a CsCl gradient after two generations in 15N-medium?
#Question id: 10209
#Unit 6. System Physiology – Plant
Protection against photodamage is a multilevel process, excited state of chlorophyll is not rapidly quenched by photochemistry it can react with molecular oxygen to form toxic photoproducts such as as singlet oxygen (1 O2*) what can damage if this second line of defense also fails to eliminate the reactive photoproducts?
#Question id: 26942
#Unit 10. Ecological Principles
#Question id: 204
#Unit 1. Molecules and their Interaction Relevant to Biology
Acyl-group-transfer reactions often involve which coenzyme?