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: 32519

#Unit 1. Structure and Function of Biomolecules

Consider a rat hepatocytes containing mitochondria and all the cytosolic enzymes and fed with readiolablled compounds in cytosol as given, Which of the following statement is correct?

TLS Online TPP Program

#Question id: 32520

#Unit 1. Structure and Function of Biomolecules

Column 1	Column 2
(a) the electron donor	1. NADH
(b) the electron acceptor	2. E-FMN
(c) the conjugate redox pair	3. NAD+/NADH
(d) the reducing agent
(e) the oxidizing agent

Match the following 

TLS Online TPP Program

#Question id: 32521

#Unit 1. Structure and Function of Biomolecules

Match the following

Column 1	Column 2
a. Abundant NADH and O2 , but cyanide added	1. all carriers become reduced
b. Abundant NADH, but O2 exhausted	2. all carriers become oxidized.
c. Abundant O2 , but NADH exhausted	3. cytochrome c oxidized.
d. Abundant NADH and O2

TLS Online TPP Program

#Question id: 32522

#Unit 1. Structure and Function of Biomolecules

Why rotenone ingestion is lethal to some insect and fish species

TLS Online TPP Program

#Question id: 32523

#Unit 1. Structure and Function of Biomolecules

n-butylmalonate reduced ATP yield because

TLS Online TPP Program

#Question id: 32524

#Unit 1. Structure and Function of Biomolecules

Which of the following sequential reactions correctly represent(s) 

a. NADH dehydrogenase → Ubiquinone → Cytochrome bc1 → Cytochrome c → Cytochrome c oxidase

b. NADH dehydrogenase → Succinate dehydrogenase → Ubiquinone → Cytochrome c → Cytochrome bc1 → Cytochrome c oxidase

c. NADH dehydrogenase → Ubiquinone → Alternative oxidase

d. NADH dehydrogenase → Alternative oxidase → Ubiquinone