A chemiosmotic model  has been proposed  to explain Polar transport , following steps are involve in the transport of auxin polarly;

a) IAA enters the cell either passively in the undissociated form (IAAH) or by secondary active cotransport in the anionic form (IAA–)

b) The cell wall is maintained at an acidic pH by the activity of the plasma membrane H+- ATPase

c) In the cytosol, which has acidic pH, the IAAH form predominates

d) The anions exit the cell via auxin anion efflux carriers that are concentrated at the basal ends of each cell in the longitudinal pathway

Which of the following is the correct statements about the polarly transporting of auxin?

TLS Online TPP Program

#Question id: 32521

#Unit 1. Molecules and their Interaction Relevant to Biology

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. Molecules and their Interaction Relevant to Biology

Why rotenone ingestion is lethal to some insect and fish species

TLS Online TPP Program

#Question id: 32523

#Unit 1. Molecules and their Interaction Relevant to Biology

n-butylmalonate reduced ATP yield because

TLS Online TPP Program

#Question id: 32524

#Unit 1. Molecules and their Interaction Relevant to Biology

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

TLS Online TPP Program

#Question id: 32710

#Unit 1. Molecules and their Interaction Relevant to Biology

The relationship between activation energy and the rate constant of the reaction, k, is given by the 

TLS Online TPP Program

#Question id: 32711

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following represents the variation of the solubility of a typical globular enzyme with pH