TLS Online TPP Program

#Question id: 3866


Which of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Section 3: Genetics, Cellular and Molecular Biology
  1. In the absence of the B subunit, core polymerase has little specificity for where initiation begins.

  2. he core enzyme contains several different subunits.

  3. The core enzyme has no polymerizing activity until the  subunit is bound.

  4. The RNA chain grows in a 5' -> 3' direction.

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TLS Online TPP Program

#Question id: 10142

#Section 2: General Biology

Which of the following statements is INCORRECT?

TLS Online TPP Program

#Question id: 10143

#Section 2: General Biology

In the carbon assimilation reaction of photosynthesis, the biosynthesis of 1 molecules of glucose from the 6 molecules of carbon dioxide requires;

TLS Online TPP Program

#Question id: 10144

#Section 2: General Biology

Choose the incorrect statements about photosynthesis dark reaction ?

TLS Online TPP Program

#Question id: 10145

#Section 2: General Biology

The transfer of a phosphoryl group to 3-phosphoglycerate, yielding formation of 1,3-bisphosphoglycerate is catalyze by

TLS Online TPP Program

#Question id: 10147

#Section 2: General Biology

Which of the following enzymes is regulated by supramolecular assembly ?

TLS Online TPP Program

#Question id: 10148

#Section 2: General Biology

How light controls the assembly of chloroplast enzymes into supramolecular complexes?

a.) Light regulates the stability of the ternary complex through the ferredoxin–thioredoxin system

b.) Reduced thioredoxin cleaves the disulfide bonds of both phosphoribulokinase and CP12, releasing glyceraldehyde-3-phosphate dehydrogenase and phosphoribulokinase in the catalytically active conformations

c.) Oxidised thioredoxin cleaves the disulfide bonds of both phosphoglyceratekinase and CP12, releasing glyceraldehyde-3-phosphate dehydrogenase and phosphoglyceratekinase in the catalytically active conformations

d.) thioredoxin system oxidised the disulfide bonds and reduces the assembly of between chloroplast enzymes and CP12 and converted into the catalytically active conformations

Which of the following statement is correct?