Practice Questions

TLS Online TPP Program

#Question id: 15286

In the case of the French flag model. we assume a source of morphogen at one end and a sink at the other and that the concentrations of morphogen at both ends are kept constant but are different from each other. If the cells can respond to threshold concentrations of the morphogen, Thresholds can represent the

#Unit 5. Developmental Biology

amount of morphogen that must bind to receptors to activate an intracellular signaling system.
concentrations of transcription factors required to activate particular genes
concentration at any point effectively provides positional information.
amount of morphogen that must bind to receptors to inactivate an extracellular signaling system.

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TLS Online TPP Program

#Question id: 19003

#Unit 13. Methods in Biology

In Thin layer chromatography, the stationary phase is made of and the mobile phase is made of

TLS Online TPP Program

#Question id: 19004

#Unit 13. Methods in Biology

If the molecule is polar which of the following chromatography can be used to analysed sample

TLS Online TPP Program

#Question id: 19005

#Unit 13. Methods in Biology

If the molecule is non-polar which of the following chromatography can be used to analysed sample

TLS Online TPP Program

#Question id: 19006

#Unit 13. Methods in Biology

Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?

TLS Online TPP Program

#Question id: 19007

#Unit 13. Methods in Biology

For the separation of which of the following substances, Gas-solid chromatography is being used?

TLS Online TPP Program

#Question id: 19008

#Unit 13. Methods in Biology

which of the following chromatography does not depend upon the nature of sample but only on size only