Given below, is the result of a complementation test for six independent mutants (A to H) '+' represents complementation; '-' represents noncomplementation Based on the above, which one of the following conclusions is correct?

#Question id: 11727

#Unit 6. System Physiology – Plant

The stages of gibberellin biosynthesis takes place various organelles and completed in various forms such as;

a) In the endoplasmic  reticulum GA12 is converted to GA53 by hydroxylation at C-13

b) In the cytosol GA12 is converted via 13-hydroxylation pathway into GA9 and further converted into GA4 by 3-β-Hydroxylation

c) In the cytosol GA53 is converted via 13-Hydroxylation pathway into GA20 and further converted into GA1 by 3-β-Hydroxylation

d) Hydroxylation at C-2 then converts GA4 and GA1 to the inactive forms GA34 and GA8, respectively

Which one of the following given combination from the above statements is true?

#Question id: 10308

#Unit 1. Molecules and their Interaction Relevant to Biology

Oxidative decarboxylation of pyruvate to acetyl-CoA by the PDH complex, how the pyruvate dehydrogenase complex carries out the five consecutive reactions in the decarboxylation and dehydrogenation of pyruvate?

 A) Pyruvate reacts with the bound thiamine pyrophosphate (TPP) of pyruvate dehydrogenase, undergoing decarboxylation to the hydroxyethyl derivative

 B) A transesterification in which the —SH group of CoA replaces the —SH group of E2 to yield acetyl-CoA and the fully reduced (dithiol) form of the lipoyl group

 C) The reduced FADH2 of E3 transfers a hydride ion to NAD1 , forming NADH, the enzyme complex is now ready for another catalytic cycle

 D) The transfer of two electrons and the acetyl group from TPP to the oxidized form of the lipoyllysyl group of the core enzyme, dihydrolipoyl transacetylase, to form the acetyl thioester of the reduced lipoyl group

 E) Dihydrolipoyl dehydrogenase promotes transfer of two hydrogen atoms from the reduced lipoyl groups of E2 to the FAD prosthetic group of E3 , restoring the oxidized form of the lipoyllysyl group of E2

 Find out the correct sequence of action of this complex enzyme?

#Question id: 4349

#Unit 3. Fundamental Processes

RNA Pol IV and Pol V

#Question id: 667

#Unit 1. Molecules and their Interaction Relevant to Biology

Which represents the backbone of a protein?

Note: R = amino acid side chain

N = nitrogen

Cα = alpha carbon

C = carbonyl carbon

#Question id: 3353

#Unit 11. Evolution and Behavior