Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 36313
TLS Online TPP Program

#Question id: 24263

Choose the incorrect option

#Unit 2. Cellular Organization

  1. The two H2A.H2B dimers each associate with 30 bp of DNA on either side of the central 60 bp of DNA bound by H3 and H4.

  2. Using the clock analogy again, the DNA associated with H2A.H2B is located from 5 o’clock to 9 o’clock on either face of the nucleosome disc.
  3. Together, the two H2A.H2B dimers form the upper part of the histone octamer located across the disc from the DNA ends
  4. Each nucleosome added to a covalently closed circular template changes the linking number of the associated DNA by approximately –1.2.
More Questions
TLS Online TPP Program

#Question id: 29079

#Unit 10. Ecological Principles

You observed the two species of barnacles, P. aurelia and P. caudatum, occupy upper and lower strata of intertidal rocks, respectively. Only when P. caudatum was removed by you from the lowers strata, P. aurelia could occupy both the upper and lower strata. From the choice given below what would be your inference from these observations.
TLS Online TPP Program

#Question id: 29080

#Unit 10. Ecological Principles

Invasive species are less impacted by enemies than native species. An explanation for the better growth and propagation of invasive species in comparison to their native counterparts is provided by which one of the following hypotheses?
TLS Online TPP Program

#Question id: 29081

#Unit 10. Ecological Principles

If a predator has multiple prey, abundance of prey are not strongly positively correlated then as one prey species, which of the following graph correctly represent this prediction;
TLS Online TPP Program

#Question id: 29082

#Unit 10. Ecological Principles

There are some major anthropogenic atmospheric gases causing the greenhouse effect, which of the following gas has the most powerful greenhouse effect?
TLS Online TPP Program

#Question id: 29083

#Unit 10. Ecological Principles

Relative absorption per ppm of increase is;
I- CO2
II- Methane 
III- Nitrous oxide
IV- Chlorofluorocarbon
Arrange in decreasing order
TLS Online TPP Program

#Question id: 29084

#Unit 10. Ecological Principles

Which of the following gases has the major contribution to global warming?