Ammonium uptake from the soil is carried out by

#Question id: 185

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the amino acids with their correct functional group:

#Question id: 3819

#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.

After one generation in 15N-medium, the DNA is denatured and analyzed in a CsCl gradient. If the single-stranded DNA forms two bands, one with heavy density and one with light density, what conclusion could be drawn about the mechanism of DNA replication in this bacterium?

#Question id: 28400

#Unit 5. Developmental Biology

Which of the following is the major candidate for the factor that forms the Nieuwkoop center ? 

#Question id: 33314

#Unit 1. Molecules and their Interaction Relevant to Biology

A plot of V0 versus V0/[S] in which inhibitor is added to the reaction mixture. Identify the consequences.

#Question id: 15779

#Unit 5. Developmental Biology