This mortality rate allows us to determine whether mortality increases with age, decreases with age, or is independent of age

TLS Online TPP Program

#Id: 9263

#XL - R Botany

Anammox is anaerobic production of molecular nitrogen from NH4 +and NO2–

TLS Online TPP Program

#Id: 9265

#XL - R Botany

TLS Online TPP Program

#Id: 9266

#XL - R Botany

N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.

TLS Online TPP Program

#Id: 9267

#XL - R Botany

Diazotrophs are able to catalyze the enzymatic reduction of this compound to ammonia (NH3) using the enzyme nitrogenase

TLS Online TPP Program

#Id: 9268

#XL - R Botany

Nitrogenase is a complex consisting of the MoFe protein (dinitrogenase or component I) a heterotetramer, and the Fe protein (dinitrogenase reductase or component II) a homodimer.

TLS Online TPP Program

#Id: 9269

#XL - R Botany

Fe protein 

contains 2 identical subunits (dimer) – nif H

Each subunit has MW of 30 ~ 72 kD.

Each subunit contains an Fe-S cluster (4Fe and 4S2-).