TLS Online TPP Program

#Question id: 548


Which one of the following statements is true of enzyme catalysts?

#SCPH06 I Botany
  1. Their catalytic activity is independent of pH.

  2. They are generally equally active on D and L isomers of a given substrate.

  3. They can increase the equilibrium constant for a given reaction by a thousand fold or more.

  4. They can increase the reaction rate for a given reaction by a thousand fold or more.

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TLS Online TPP Program

#Question id: 11591

#SCPH06 I Botany

Gibberellins biosynthesis completes in almost three organelles

TLS Online TPP Program

#Question id: 11592

#I Life Science/ Life Sciences Group – I-V

Gibberellin biosynthesis precursor is____

TLS Online TPP Program

#Question id: 11592

#SCPH06 I Botany

Gibberellin biosynthesis precursor is____

TLS Online TPP Program

#Question id: 11593

#I Life Science/ Life Sciences Group – I-V

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?

TLS Online TPP Program

#Question id: 11593

#SCPH06 I Botany

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?

TLS Online TPP Program

#Question id: 11594

#I Life Science/ Life Sciences Group – I-V

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