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TLS Online TPP Program

#Question id: 10351

Plants contain two types of GOGAT; one accepts electrons from NADH, and the other accepts electrons from ferredoxin (Fd); which one of the following statements is correct?

#Unit 6. System Physiology – Plant
  1. The NADH type of the enzyme (NADH-GOGAT) is located in plastids of nonphotosynthetic tissues such as roots or the vascular bundles of developing leaves
  2. In vascular bundles of developing leaves, NADH-GOGAT is involved in the assimilation of NH4 + absorbed from the rhizosphere
  3. In roots, NADH-GOGAT assimilates glutamine translocated from roots or senescing leave

  4. The ferredoxin-dependent type of glutamate synthase (Fd-GOGAT) is found in cytoplasm and serves in photorespiratory nitrogen metabolism

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TLS Online TPP Program

#Question id: 19792

#Unit 13. Advances in Biotechnology

Expression of BtR175 gene in mammalian cells enables Cry1Aa to bind the cells and cause their lysis. The specificity seems to be lost upon reduction of which amino acid residues of the protoxin, but can be restored by reoxidation of these residues?
TLS Online TPP Program

#Question id: 19793

#Unit 13. Advances in Biotechnology

The specificity of cry protein seems to be lost upon reduction of which amino acid residues of the protoxin, but can be restored by reoxidation of these residues?
TLS Online TPP Program

#Question id: 19794

#Unit 13. Advances in Biotechnology

The specificity of cry protein is lost upon reduction of cysteine residues of the protoxin, but can be restored by
TLS Online TPP Program

#Question id: 19795

#Unit 13. Advances in Biotechnology

Expression of BtR175 gene in mammalian cells enables Cry1Aa to bind the cells and cause their lysis. But upon what process this specificity can get lost?
TLS Online TPP Program

#Question id: 19796

#Unit 13. Advances in Biotechnology

The toxicity of cry protein toxins can be increased by the following approaches
1. Site directed mutagenesis within the toxin encoding region
2. Production of hybrid cry genes by fusing selected toxin domains of two or more different cry genes
Which of the following approaches could be correct?
TLS Online TPP Program

#Question id: 19797

#Unit 13. Advances in Biotechnology

 Which type of cry genes are used for the production of transgenic plants