TLS Online TPP Program

#Question id: 23154


When the organelles pH is acidic the how the SNARF-1 dye measures this acidity?

#Unit 13. Methods in Biology
  1. The dye gets protonated and hence localized inside the organelle
  2. The dye gets deprotonated and hence localized inside the organelle
  3. The dye gets protonated and hence moves outside the organelle
  4. The dye gets deprotonated and hence moves outside the organelle
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TLS Online TPP Program

#Question id: 33240

#Unit 1. Molecules and their Interaction Relevant to Biology

Metal ions participate in the catalytic process
A. By binding to substrates to orient them properly for reaction.
B. By mediating oxidation–reduction reactions through reversible changes in the metal ion’s oxidation state.
C. By electrostatically stabilizing or shielding negative charges.
Which is/are correct statement

TLS Online TPP Program

#Question id: 33241

#Unit 1. Molecules and their Interaction Relevant to Biology

Carbonic anhydrase contains an essential Zn2+ ion which is involved in

TLS Online TPP Program

#Question id: 33242

#Unit 1. Molecules and their Interaction Relevant to Biology

Reactants must come together with the proper spatial relationship for a reaction to occur in the active site of enzymes called as

TLS Online TPP Program

#Question id: 33243

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzyme’s proximity and orientation effects alone can enhance reaction rates by 

TLS Online TPP Program

#Question id: 33244

#Unit 1. Molecules and their Interaction Relevant to Biology

Charged groups may help stabilize the transition state of the reaction, a phenomenon termed as 

TLS Online TPP Program

#Question id: 33245

#Unit 1. Molecules and their Interaction Relevant to Biology

   

Reaction catalyzed by proline racemase from Clostridium sticklandii is thought to occur via a planar transition state as shown above. The compound can affect reaction significantly as