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TLS Online TPP Program

#Question id: 2619

CAP and the Lac repressor; Which one is incorrect about this.

#Unit 2. Cellular Organization

  1. DNA-binding proteins

  2. CAP mediates the effect of glucose

  3. Lac repressor mediates the lactose signal

  4. The combined effect of these two regulators ensures that the genes are expressed at significant levels only when lactose & glucose both are present.

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TLS Online TPP Program

#Question id: 5606

#Unit 5. Developmental Biology

During which one of the following stages of A. thaliana embryogenesis, cell elongation throughout the embryonic axis and further development of the cotyledons occur?
TLS Online TPP Program

#Question id: 12429

#Unit 10. Ecological Principles

Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.


Which of the following organisms is incorrectly paired with its trophic level? 
TLS Online TPP Program

#Question id: 33278

#Unit 2. Cellular Organization

During chromosome attachment to the mitotic spindle, the tension-sensing mechanism depends on the protein, known as:
TLS Online TPP Program

#Question id: 33443

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is not an unusual base?
TLS Online TPP Program

#Question id: 4563

#Unit 11. Evolution and Behavior

If ʺxʺ indicates the location of fossils of two closely related species, then fossils of their most-recent common ancestor are most likely to occur in which stratum?