Practice Questions

TLS Online TPP Program

#Question id: 453

Which statement does not explain why many biochemical processes are carried out via multi-step pathways rather than by single-step reactions (or only a few steps)

#Unit 1. Molecules and their Interaction Relevant to Biology

Multi-step pathways allow for more control points to regulate biochemical processes.
The end products of most pathways can usually be produced only by the pathway reactions that nature has evolved.
Sharing of intermediates between pathways is facilitated this way.
There is greater control over the amounts of energy that are consumed or released at any one time.

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TLS Online TPP Program

#Question id: 3307

#Unit 11. Evolution and Behavior

Which of the following conditions is not necessarily be fulfilled to trigger natural selection

TLS Online TPP Program

#Question id: 12626

#Unit 6. System Physiology – Plant

Strigolactone biosynthesis takes place in____

TLS Online TPP Program

#Question id: 15234

#Unit 13. Methods in Biology

Polymerisation of acrylamide and bis-acrylamide gel takes place by free radical contribution due to

TLS Online TPP Program

#Question id: 28356

#Unit 5. Developmental Biology

The following statements were made regarding the patterning of anterior-posterior body plan of Drosophila:

A. Mutant Nanos mRNA that leads to the deletion of abdomen region

B. Nanos mutant phenotype expressed two head phenotype

C. Nanos is a posterior morphogenic protein

D. It involves to represses the caudal mRNA

TLS Online TPP Program

#Question id: 26388

#Unit 3. Fundamental Processes

A eukaryotic genome is divided into multiple replicons, and how many time origin in each replicon is activated in a single division cycle