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TLS Online TPP Program

#Question id: 1244

Which type of experimental evidence shows that the intrinsic GTPase activity of the Gα subunit is important for terminating effector activation?

#Unit 4. Cell Communication and Cell Signaling

  1. A nonhydrolyzable GTP analog that can bind to the Gα subunit but cannot be hydrolyzed by the intrinsic GTPase, thereby activating the effector protein longer upon ligand-induced activation of the receptor. 

  2. A nonhydrolyzable GTP analog causes displacement of GDP with the modified GTP resulting in continuous activation of the receptor because the bound GTP analog cannot be hydrolyzed to GDP.

  3. A dominant active (constant activity) GEF causes stimulation of the effector protein for longer upon ligand-induced activation of the receptor.

  4. A dominant negative (no activity) GEF causes stimulation of the effector protein for longer upon ligand-induced activation of the receptor.

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TLS Online TPP Program

#Question id: 20996

#Unit 12. Applied Biology

In toluene degradation end product formed from two molecules of acetyl coa is
TLS Online TPP Program

#Question id: 20994

#Unit 12. Applied Biology

Some examples of bacteria involved in toluene degradation activity are
1. Pseudomonas
2. Thiobacillus
3. Geobacter metallireducens
4. Psychrophile
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20993

#Unit 12. Applied Biology

Toluene decay by the denitrifying pseudomonas sp. Strain k172 is done. The enzymes involved in degradation pathway are   
1.  Benzyl alcohol dehydrogenase
2.  Benzaldehyde dehydrogenase
3.  Benzoyl-coa synthetase 
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20987

#Unit 12. Applied Biology

Toluene degradation could be optimized and linked to the reduction of 
1. Nitrate 
2. Nitrous oxide
3. Nitrite
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20983

#Unit 12. Applied Biology

Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?
1. Xylene
2. Ethylbenzene
3. Toluene
4. Benzene
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20711

#Unit 12. Applied Biology

During the electron transfer process, usable energy is recovered via a series of redox reactions through the formation of 
1. Energy storage compounds 
2. Electrochemical gradients
3. Vacoules
Which of the below combinations are correct?