TLS Online TPP Program

#Question id: 3980


Which of the following statements correctly describes promoters in E. coli?

#Unit 3. Fundamental Processes
  1. A promoter may be present on either side of a gene or in the middle of it.

  2. All promoters have the same sequence that is recognized by RNA polymerase holoenzyme.

  3. Every promoter has a different sequence, with little or no resemblance to other promoters.

  4. Many promoters are similar and resemble a consensus sequence, which has the highest affinity for RNA polymerase holoenzyme.

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TLS Online TPP Program

#Question id: 11912

#Unit 10. Ecological Principles

The success of birds introduced to Tahiti or the Hawaiian Islands was dependent on the morphology of the species already present. If there was a small morphological difference in bill length between the resident and introduced species, then

TLS Online TPP Program

#Question id: 11913

#Unit 10. Ecological Principles

During the rate of succession several factors would be observe at the pioneer as well as climax community;

STAGESCHARACTER
A) Pioneer communityi) Biotic Potential low
B) Climax communityii) Root to Shoot ratio is high
iii) Productivity per biomass is low
iv) Net primary productivity is high
v) P/R ratio is greater than 1
vi) Nutrient cycling is closed
vii) Regeneration ability is more
viii) Resistance ability is more

Match the community stages with its given characters;

TLS Online TPP Program

#Question id: 11914

#Unit 10. Ecological Principles

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,

TLS Online TPP Program

#Question id: 11915

#Unit 10. Ecological Principles

Which of the following is the correct prediction about the three types of model such as; Facilitation, Inhibition, Tolerance model.

TLS Online TPP Program

#Question id: 11916

#Unit 10. Ecological Principles

Which one of the following  features of an later community?

TLS Online TPP Program

#Question id: 11917

#Unit 10. Ecological Principles

Which one of the following  features of an early community?