Practice Questions

TLS Online TPP Program

#Question id: 7768

The insulin signaling pathway inhibits the synthesis of the Foxo transcription factor proteins that would otherwise increase cellular longevity. Downregulation of the insulin signaling pathway has several other functions, choose right one

#Unit 5. Developmental Biology

It appears to influence metabolism, increasing mitochondrial electron transport.
When the DAF-2 receptor is not active, cells increase the production of enzymes that prevent oxidative damage, as well as DNA repair enzymes.
This lack of insulin signaling increases fertility.
Decrease in DNA synthetic enzymes and in enzymes that protect against ROS is due to the Foxo/DAF-16 transcription factor

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TLS Online TPP Program

#Question id: 19100

#Unit 6. System Physiology – Plant

Xanthomonas oryzae secretes a highly conserved peptide, which mediates quorum sensing by

TLS Online TPP Program

#Question id: 9190

#Unit 9. Diversity of Life Forms

What is the probable role of salicylic acid in the defense responses of plants?

TLS Online TPP Program

#Question id: 26934

#Unit 10. Ecological Principles

Morphological differences in two closely related species present in same geographical area shows

TLS Online TPP Program

#Question id: 4925

#Unit 8. Inheritance Biology

The pedigree in Figure shows the transmission of a trait in a particular family. Based on this pattern of transmission, the trait is most likely

TLS Online TPP Program

#Question id: 12642

#Unit 6. System Physiology – Plant

The systemic production of proteinase inhibitors in young tomato plants is triggered by a complex sequence of events such as;

1) Prosystemin is proteolytically processed to produce the short polypeptide called systemin

2) Systemin is then transported out of the wounded leaf via the phloem.

3) systemin is believed to bind to a site on the plasma membrane and initiate the biosynthesis of jasmonic acid

4) Wounded tomato leaves synthesize prosystemin, a large recursor protein

5) Systemin is released from damaged cells into the apoplast

6) Jasmonic acid eventually activates the expression of genes that encode proteinase inhibitors

Arrange the correct sequence of given above following statements ;