The E. coli rrn promoters are also regulated by a pair of small molecules: the initiating NTP (the iNTP) and an alarmone,  guanosine 5 -diphosphate 3-diphosphate (ppGpp). An abundance of iNTP indicates that the concentration of  nucleotides is high, and therefore it is appropriate to synthesize plenty of rRNA. 

TLS Online TPP Program

#Id: 2909

#Unit 3. Fundamental Processes

he prepriming complex generates a protein aggregate of 480 kD, which corresponds to a sphere of radius 6 nm

TLS Online TPP Program

#Id: 4699

#Unit 11. Evolution and Behavior

Altruism in social insects(haplodiploidy) Workers, rarely reproduce themselves but instead help one reproductive female (the queen) to raise offspring, a phenomenon called eusociality.

TLS Online TPP Program

#Id: 6452

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 6818

#Unit 8. Inheritance Biology

Quantitative character - Large number of possible phenotypes that are not easily distinguished.

TLS Online TPP Program

#Id: 7861

#Unit 1. Molecules and their Interaction Relevant to Biology

For an equilibrium mixture, the fraction of D-glucose in the a form is