Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 11846
TLS Online TPP Program

#Question id: 10144

Choose the incorrect statements about photosynthesis dark reaction ?

#Section 2: General Biology
  1. The light dependent enzymes which are activated by Ferredoxin–thioredoxin system, contain oxidised di-sulfide bonds (—S—S—) in its active form
  2. C3 cycle or Calvin–Benson cycle is regulated by Photosystem I
  3. The activation of enzymes of the Calvin– Benson cycle starts in the light with the reduction of ferredoxin by the photosynthetic electron transport chain (Chl)
  4. The series of Ferredoxin–thioredoxin system in presence of light is,  2 Ferredoxin (oxidized) to 2 Ferredoxin (reduced)→ Trx(s−s) to Trx(SH) → Ferredoxin– thioredoxin reductase (s−s) to Ferredoxin– thioredoxin reductase(SH)→ Enzyme (inactive)(s−s) to Enzyme (active)(SH)
More Questions
TLS Online TPP Program

#Question id: 15139

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which one of the following is NOT a structure or structurally derived database?
TLS Online TPP Program

#Question id: 15140

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Two types of pair-wise sequence alignment of the same hypothetical protein sequence fragments are illustrated in the figure below. Vertical bars between the sequences indicate the presence of identical amino acids. * symbols in Figure Y indicate residues not included in the alignment.





Which one of the following is correct?
TLS Online TPP Program

#Question id: 15141

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

An alignment of two protein sequences is given below:

Sequence A         A G A A C D E V I G
Sequence B         A G E Y C D A V I G
The similarity score (%) for the above alignment will be:
TLS Online TPP Program

#Question id: 15142

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Dot matrix analysis of the amino acid sequences of lambda phage cI (horizontal sequence) and phage P22 c2 (vertical sequence) repressors is shown below. Which one of the following is correct?
TLS Online TPP Program

#Question id: 15143

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which one of the following is a depiction of the GenBank sequence entry format?
TLS Online TPP Program

#Question id: 15167

#Section 6: Plant, Animal and Microbial Biotechnology

Bacteria on fish caught in the Arctic Ocean would