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GATE 2017-2018 :: GATE Biotechnology

  1. An E. coli cell of volume 10-12 cm3 contains 60 molecules of lac-repressor. The repressor has a binding affinity (Kd) of 10-8 M and 10-9 M with and without lactose respectively, in the medium.
    The molar concentration of the repressor in the cell is
  2. A.
    0.1 nM
    B.
    1 nM
    C.
    10 nM
    D.
    100 nM

  3. An E. coli cell of volume 10-12 cm3 contains 60 molecules of lac-repressor. The repressor has a binding affinity (Kd) of 10-8 M and 10-9 M with and without lactose respectively, in the medium.
    Therefore the lac-operon is
  4. A.
    repressed and can only be induced with lactose.
    B.
    repressed and cannot be induced with lactose.
    C.
    not repressed.
    D.
    expressed only when glucose and lactose are present.

  5. The cost function for a product in a firm is given by 5q2, where q is the amount of production. The firm can sell the product at a market price of RS. 50 per unit. The number of units to be produced by the firm such that the profit is maximized is
  6. A.
    5
    B.
    10
    C.
    15
    D.
    25

  7. Choose the grammatically INCORRECT sentence:
  8. A.
    They gave us the money back less the service charges of Three Hundred rupees.
    B.
    This country's expenditure is not less than that of Bangladesh.
    C.
    The committee initially asked for a funding of Fifty Lakh rupees, but later settled for a lesser sum.
    D.
    This country's expenditure on educational reforms is very less.

  9. Which one of the following options is the closest in meaning to the word given below? 
    Mitigate
  10. A.
    Diminish
    B.
    Divulge
    C.
    Dedicate
    D.
    Denote

  11. Choose the most appropriate alternative from the options given below to complete the following sentence: 
    Despite several “““““““““ the mission succeeded in its attempt to resolve the conflict.
  12. A.
    attempts
    B.
    setbacks
    C.
    meetings
    D.
    delegations

  13. Wanted Temporary, Part-time persons for the post of Field Interviewer to conduct personal interviews to collect and collate economic data. Requirements: High School-pass, must be available for Day, Evening and Saturday work. Transportation paid, expenses reimbursed. 
    Which one of the following is the best inference from the above advertisement?
  14. A.
    Gender-discriminatory
    B.
    Xenophobic
    C.
    Not designed to make the post attractive
    D.
    Not gender-discriminatory

  15. Given the sequence of terms, AD CG FK JP, the next term is
  16. A.
    OV
    B.
    OW
    C.
    PV
    D.
    PW

  17. Which of the following assertions are CORRECT
    P: Adding 7 to each entry in a list adds 7 to the mean of the list
    Q: Adding 7 to each entry in a list adds 7 to the standard deviation of the list 
    R: Doubling each entry in a list doubles the mean of the list 
    S: Doubling each entry in a list leaves the standard deviation of the list unchanged
  18. A.
    P, Q
    B.
    Q, R
    C.
    P, R
    D.
    R,S

  19. An automobile plant contracted to buy shock absorbers from two suppliers X and Y. X supplies 60% and Y supplies 40% of the shock absorbers. All shock absorbers are subjected to a quality test. The ones that pass the quality test are considered reliable. Of X's shock absorbers, 96% are reliable. Of Y's shock absorbers, 72% are reliable. 
    The probability that a randomly chosen shock absorber, which is found to be reliable, is made by Y is
  20. A.
    0.288
    B.
    0.334
    C.
    0.667
    D.
    0.720