Select the CORRECT combination by matching the junctions with their principal CAMs or adhesion receptors.

Junctions	Principal CAMs or Adhesion receptors
1. Tight junctions	a. Integrins
2. Gap Junctions	b. Occludin
3. 3-D adhesions	c. Connexin
4. Plasmodesmata	d. Undefined

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