TFIIE -80 to +30 For bacterial RNA polymerase, only the sigma factor is needed for the enzyme to recognize the promoter. The eukaryotic transcription factors may indeed act as sigma factors to allow the eukaryoitic RNA polymerase to recognize the promoter.
An energy pyramid is the graphical representation of the trophic levels (nutritional) by which the incoming solar energy is transferred into an ecosystem.The source of energy for living beings on Earth is the Sun.The energy that the Sun emits at present is of 1366.75 W/m^2 (400 years ago, it was of 1363.48 W/m^2).n energy pyramid is the graphical representation of the trophic levels (nutritional) by which the incoming solar energy is transferred into an ecosystem.
Pyramid of Biomass. The name of the pyramid biomass comes from the fact that it is represented in the pyramid form. Their energy capacity is usually concentrated at the base, which is represented as being wide and decreases as one move up to the apex. The pyramid is used as a manner of clarifying the movement of the biomass as well as the energy through the ecosystem. The manner of Pyramid of Biomass representation is based on the thermodynamics. The law states that energy can never be destroyed and neither can it be created.