TLS Online TPP Program

#Question id: 491


All of the following enzymes involved in the flow of carbon from glucose to lactate (glycolysis) are also involved in the reversal of this flow (gluconeogenesis) except:

#Life Sciences
  1. 3-phosphoglycerate kinase.

  2. aldolase.

  3. enolase.

  4. phosphofructokinase-1.

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TLS Online TPP Program

#Question id: 39256

#Plant Biotechnology

Q. Resistance to TMV and root-knot nematode in gametophytic tissue culture-derived plants has been reported in:

TLS Online TPP Program

#Question id: 39257

#Plant Biotechnology

Q. Assertion (A): The main purpose of producing asymmetric hybrids is the introgression of specific desirable genes into another species.
Reason (R): Asymmetric hybridization allows selective elimination of chromosomes from one parent while retaining specific genes.

TLS Online TPP Program

#Question id: 39258

#Plant Biotechnology

Q. Assertion (A): Asymmetric hybrids often contain multiple genome copies of the non-irradiated parent.
Reason (R): Irradiation of one parent leads to extensive chromosome breakage and deletion.

TLS Online TPP Program

#Question id: 39259

#Plant Biotechnology

Q. Assertion (A): After repeated backcrossing of asymmetric hybrids with N. plumbaginifolia, plants with a diploid N. plumbaginifolia genome and a few A. belladonna chromosomes were recovered.
Reason (R): Backcrossing helps eliminate unwanted alien chromosomes while retaining selected genes.

TLS Online TPP Program

#Question id: 39260

#Plant Biotechnology

Q. Assertion (A): All asymmetric hybrids contained nitrate reductase gene and rDNA repeats of Atropa belladonna.
Reason (R): rDNA repeats are often preferentially retained during asymmetric hybridization.

TLS Online TPP Program

#Question id: 39261

#Plant Biotechnology

Q.Assertion (A): Hybrids obtained from irradiated carrot and non-irradiated rice protoplast fusion resembled rice plants.
Reason (R): The non-irradiated parent usually contributes more intact genomic material.