In the presence of a fixed concentration of a competitive inhibitor, which of the following would best characterize an enzyme-catalyzed reaction when the concentration of the substrate is increased?

#Question id: 11593

#Unit 6. System Physiology – Plant

Following are given stages of gibberellin biosynthetic pathway;

a) Geranylgeranyl diphosphate (GGPP) is converted to ent-kaurene  via copalyl diphosphate (CPP) in endoplasmic reticulum

b) In the endoplasmic reticulum, conversion of ent-kaurene into GA12 or GA53 depending on whether the GA is hydroxylated at carbon 13

c) the conversion of GA12 or GA53 into other GAs in cytosol proceeds with a series of oxidations at carbon 20

d) GA20 is then oxidized to the active gibberellin, GA1, by a 3β-hydroxylation reaction

Which of the following is the correct statements of GA biosynthesis?

#Question id: 11594

#Unit 6. System Physiology – Plant

Given some compounds that are the first stage inhibitor of gibberellin biosynthesis except?

#Question id: 11595

#Unit 6. System Physiology – Plant

Paclobutrazol and other inhibitors of P450 monooxygenases specifically inhibit the stage of gibberellin biosynthesis

#Question id: 11596

#Unit 6. System Physiology – Plant

Which enzyme catalyzes  all the reactions involving the successive oxidation steps of carbon 20 between GA53 and GA20, including the removal of C-20 as CO2?

#Question id: 11597

#Unit 6. System Physiology – Plant

GA 2-oxidase catalyzing the addition of a hydroxyl group to C-2 by inactivates

#Question id: 11598

#Unit 6. System Physiology – Plant

How the GA3 is differ from GA1______