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TLS Online TPP Program

#Question id: 26479

 Mutations in the three lac operators shows different values of fold repression  in which of the following situation will get most  effective repression


#Unit 2. Cellular Organization
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TLS Online TPP Program

#Question id: 19814

#Unit 12. Applied Biology

Ribozyme/ RNaseP approach is one of the strategies for producing virus resistant transgenic plants. How this provides protection?
TLS Online TPP Program

#Question id: 5134

#Unit 5. Developmental Biology

Match the following cleavage patterns with the species in which they occur.

        Species                                           Cleavage Pattern

      A. Flatworm                                       i. Meroblastic discoidal

      B. Frog                                               ii. Meroblastic superficial

      C. Birds                                              iii. Holoblastic displaced radial

      D. Insect                                              iv. Holoblastic spiral
TLS Online TPP Program

#Question id: 8903

#Unit 9. Diversity of Life Forms

Terry detaches the snakelike organism from the fish and uses a knife to cut off its head. In doing so, its brain slides out onto the deck of the boat. Terry peers into the cut end of the head and notices that the brain had lain in a sort of pan-like structure that only partially surrounded the brain. What is the structure Terry is observing, and what is it made of?
TLS Online TPP Program

#Question id: 3670

#Unit 3. Fundamental Processes

The best-known examples of host-encoded site-specific recombination systems used to resolve plasmid dimers are the cer-XerCD site-specific recombination systems used by the
TLS Online TPP Program

#Question id: 1523

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the apoptosis which is induced by trophic factors.

A. The presence of specific trophic factors (e.g., NGF) leads to activation of their cognate receptor tyrosine kinases (e.g., TrkA) and activation of the PKB pathway.

B. DNA damage or ultraviolet irradiation leads to induction of synthesis of the BH3-only Puma protein. Puma binds to Bak and Bax as well as to Bcl-2, allowing Bak and Bax to form oligomeric pores.

C. Removal of a cell from its substratum disrupts integrin signaling, leading to release of the BH3-only Bim protein from the cytoskeleton.

D. Binding of extracellular death signals, such as tumor necrosis factor and Fas ligand, to their receptors oligomerizes an associated protein (FADD), which in turn triggers the caspase cascade, leading to cell murder by apoptosis.

Which of the following pathway does not belong to the trophic factor inducing apoptotic pathway?