TLS Online TPP Program

#Question id: 4489


HSP70 gene from Drosophila. This gene, activated by heat shock, is controlled by two activators GAGA binding factor and HSF,In response to heat shock, HSF binds to specific sites at the promoter and recruits a kinase, P-TEFb (positive transcription elongation factor). What is the proper mechanism of pausing and release of Pol II ?

#Unit 3. Fundamental Processes
  1. Second phosphorylation on Serine5 is achieved through recruitment of the kinase P-TEFb

  2. P-TEFb is part of a super elongation complex, which releases paused Pol II from the proximal promoter.

  3. A strong acidic activator like Gal4 is able to recruit PTEFb/SEC along with the rest of the machinery

  4. B and C Only

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TLS Online TPP Program

#Question id: 11405

#Unit 10. Ecological Principles

Vulnerability to extinction can be linked to species following characteristics. Which of the following statement are correct?

A. Endemism species are more prone to extinction than fragmented

B. Species that are capable of migrating between fragments of habitat, such as between mainland areas and islands, may be more resistant to extinction

C. Population variability species are less prone to extinct

D. Species with naturally long life spans may be more likely to become extinct

TLS Online TPP Program

#Question id: 11406

#Unit 10. Ecological Principles

Which of the following is true for a critically endangered species?

TLS Online TPP Program

#Question id: 11407

#Unit 10. Ecological Principles

Which of the following is incorrect statement?

TLS Online TPP Program

#Question id: 11408

#Unit 10. Ecological Principles

According to IUCN red list criteria , a species would be classified on the basis of following criteria are a- >50 decline in population during last 10 year b-occur in area less than 20,000 sq km c- total adult population less than 2500 Above observation which of the following class of IUCN

TLS Online TPP Program

#Question id: 11409

#Unit 10. Ecological Principles

Species characteristics that make them less prone to extinction are listed below:

A. Narrow niche and specialized

B. High dispersal power

C. High trophic status

D. Long life span

Which of the following is the correct combination?

TLS Online TPP Program

#Question id: 11410

#Unit 10. Ecological Principles

Biodiversity hot spots, those areas with the greatest number of endemic species. Which of the following criteria to qualify as a hot spot region?

A. It must contain at least 1,500 species of vascular plants as endemics

B. It must have lost at least 70% of its original habitat

C. It must contain at least 500 species of bird species

D- It must contain high numbers of species