In theory, auxin could increase the rate of proton extrusion by two possible mechanisms:

I) H+-ATPase activation

II) H+-ATPase synthesis

a) Auxin involves in the activation of ATP-driven proton-pump (H+-ATPase) indirectly

b) ABPs appear to be able to activate the plasma membrane H+-ATPase in the presence of auxin

c) Activity of the H+- ATPase is repressed by the C-terminal domain of the enzyme, which can block the catalytic site  in absence of auxin

d) The protein is synthesized on the rough endoplasmic reticulum and targeted via the secretory pathway to the plasma membrane

Find out the correct explanation of given mechanisms.

TLS Online TPP Program

#Question id: 203

#Unit 1. Structure and Function of Biomolecules

Which of the following two-electron transfer reactions can be linked to one-electron transfer reactions by

A) formation of semiquinones.

B) a [Fe-S] cluster.

C) NADH and NADPH.

TLS Online TPP Program

#Question id: 204

#Unit 1. Structure and Function of Biomolecules

Acyl-group-transfer reactions often involve which coenzyme?

TLS Online TPP Program

#Question id: 205

#Unit 1. Structure and Function of Biomolecules

Which coenzyme is composed of a 2-mercaptoethylamine unit, the vitamin pantothenate and an ADP moiety? 

TLS Online TPP Program

#Question id: 206

#Unit 1. Structure and Function of Biomolecules

The reactive center of coenzyme A is

TLS Online TPP Program

#Question id: 207

#Unit 1. Structure and Function of Biomolecules

TLS Online TPP Program

#Question id: 208

#Unit 1. Structure and Function of Biomolecules

The structure shown below is which coenzyme?