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GATE 2017-2018 :: GATE Biotechnology

  1. Phylum proteobacteria is subdivided into α-, β-, ϒ-, δ- and ϵ-proteobacteria based on
  2. A.
    G+C content
    B.
    23S rRNA sequences
    C.
    tRNA sequences
    D.
    16S rRNA sequences

  3. Which one of the following is an ABC transporter?
  4. A.
    multidrug resistance protein
    B.
    acetylcholine receptor
    C.
    bacteriorhodopsin
    D.
    ATP synthase

  5. The catalytic efficiency for an enzyme is definedas
  6. A.
    kcat
    B.
    vmax/kcat
    C.
    kcat/km
    D.
    kcat/vmax

  7. Of the two diploid species, species I has 36 chromosomes and species II has 28 chromosomes. How many chromosomes would be found in an allotriploid individual?
  8. A.
    42 or 54
    B.
    46 or 50
    C.
    74 or 86
    D.
    84 or 108

  9. The RNA primer synthesized during the replication process in bacteria is removed by
  10. A.
    DNA gyrase
    B.
    primase
    C.
    DNA polymeraseI
    D.
    DNA polymerase II

  11. The suitable substitution matrix to align closely related sequences is
  12. A.
    PAM 250 or BLOSSUM 80
    B.
    PAM 40 or BLOSSUM 80
    C.
    PAM 120 or BLOSSUM 40
    D.
    PAM 250 or BLOSSUM 40

  13. If  ,which one of the following statements is TRUE?
  14. A.
    PQ = PR
    B.
    QR= RP
    C.
    QP = RP
    D.
    PQ = QR

  15. If u = log(ex + ey), then 
  16. A.
    ex + ey
    B.
    ex - ey
    C.
    1/(ex + ey)
    D.
    1

  17. Hypophosphatemia is manifested by an X-linked dominant allele.What proportion of the offsprings from a normal male and an affected heterozygous female will manifest the disease?
  18. A.
    ½ sons and ½ daughters
    B.
    all daughters and no sons
    C.
    all sons and no daughters
    D.
    ¼ daughters and ¼ sons

  19. One of theeigen values of P =  is
  20. A.
    2
    B.
    4
    C.
    6
    D.
    8