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TLS Online TPP Program

#Question id: 654

Which pair represents different conformations?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. cis-1,2-dichloroethene and trans-1,2-dichloroethene

  2. L-glycine and D-glycine

  3. eclipsed ethane and staggered ethane

  4. pentane and 2-methylbutane

More Questions
TLS Online TPP Program

#Question id: 12968

#Unit 10. Ecological Principles

Most terrestrial ecosystems have a pyramidal structure of where biomass of producers > primary consumers > secondary consumers > tertiary consumers. However, some aquatic ecosystems have an inverted pyramidal structure where the standing biomass of producers < primary consumers. An explanation for this is:
TLS Online TPP Program

#Question id: 798

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the structural properties of DNA with the respective types of DNA in which they are found.

               COLUMN – I                                             COLUMN – II

A.        Pitch per turn of helix                                     1. 45.6 angstrom                   

                                                                                      2. 24.6 angstrom                               

 3. 33.2 angstrom

B.        Helix packing diameter                                 1. 23.7 angstrom            

                                                                                     2. 18.4 angstrom            

3. 25.5 angstrom

C.        Major-groove proportions                            1. Flattened out on helix surface

                                                                                      2. Extremely narrow but very deep

 3. Wide and of intermediate depth

D.        Minor-groove proportions                            1. Very broad but shallow

                                                                                     2. Extremely narrow but very deep

                                                                                    3. Narrow and of intermediate depth
TLS Online TPP Program

#Question id: 19330

#Unit 12. Applied Biology

Which one of the following can be used to measure the environmental and water quality?
TLS Online TPP Program

#Question id: 1052

#Unit 4. Cell Communication and Cell Signaling

The correct order for the stages of a phage infection is:
TLS Online TPP Program

#Question id: 7285

#Unit 5. Developmental Biology

During xenopus gastrulation, C3a functions as a short-range chemoattractant to guide the radial intercalation movements of cells. If Knockdown of C3a with antisense morpholinos results: