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TLS Online TPP Program

#Question id: 12535

If you were tracking a nutrient molecule through an ecosystem, which of the following statements would you expect to verify?

#Unit 10. Ecological Principles
  1. Molecules move through all ecosystems at the same constant rate, as the laws of physics would predict.
  2. Because of the liquid  nature of the aquatic ecosystem, nutrient molecules move through it  more rapidly than forest ecosystems.
  3. Vertical mixing is essential for high productivity in aquatic ecosystems.
  4. Most nutrient molecules leave an ecosystem, but are later replaced from another ecosystem.
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TLS Online TPP Program

#Question id: 19199

#Unit 12. Applied Biology

Example of calorimetric biosensor could be
1. Hydrogen peroxide and Catalase 
2.  Glucose oxidase
3. HCG and antibody 
4. Peptides and trypsin
Which among the following is the example?
TLS Online TPP Program

#Question id: 10499

#Unit 6. System Physiology – Plant

Stomata from intact, attached leaves of Arabidopsis illuminated with blue, red, and green light in a growth chamber, increases and decreases their aperture in response to light.

 

Find the CORRECT statements from the above graph.

i) Stomatal aperture increases when the green light is turned off, and close when the green light is turned on again

ii) Stomata from the phototropin-less double mutant phot1/phot2 respond to blue light and open further when green light is turned off

iii) stomata from the zeaxanthin less mutant npq1 do not respond to blue light and least effect to opening of the stomata further when green light is turned off

iv) the npq1 mutant and phot1/phot2 double mutant response indicate that the green reversal of the blue-light response requires zeaxanthin but also phototropin
TLS Online TPP Program

#Question id: 4092

#Unit 3. Fundamental Processes

An experimental setup provided the assay for identifying factors that facilitate transcription in the presence of chromatin. A factor called FACT (facilitates chromatin transcription) functions as
TLS Online TPP Program

#Question id: 4406

#Unit 3. Fundamental Processes

An electrophoretic mobility shift assay (EMSA) was conducted to check for the binding of TFIIB to a segment of a DNA promoter region. Which of the following approaches could be used to confirm that TFIIB is indeed binding?
TLS Online TPP Program

#Question id: 1241

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a common step in the opening/closing of ion channels by acetylcholine and rhodopsin binding to their receptors?