49.

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The enzyme which can be used to synthesize DNA from mRNA by providing an oligo(dT)
primer that pairs with the poly (A) sequence at the 3’ end of eukaryotic MRNA is

A) Reverse transcriptase B) Restriction endonuclease

C) Topoisomerase D) Primase

The plasmids which can be used for introducing new genes into plant cells are
A) R plasmids B) Col plasmids C) Ti plasmids D) F plasmids

Genes from higher organisms may be introduced into microbial cells so that the recipients
become capable of synthesizing foreign proteins which are described as

A) 15017610 proteins B) Conjugated proteins

C) Heterologous proteins D) Fusion proteins

The key factor/s affecting the hyphal morphology in submerged culture are
i. The concentration of spores in the medium

ர்‌. Design of the medium

iii. Shear conditions

iv. Volume of the medium

Select the correct option from the following.

A) Only i B) Only ii and iii

C) Only i, ii and iii D) All the above | ii, iii, iv

The washout of the inoculum before an adapted culture is established is the main
difficulty in using a
A) Continuous-enrichment process B) Batch-enrichment process
C) Fed-batch-enrichment process D) All the above

The SSF bioreactor in which the bed is static or mixed only very infrequently (i.e., once
per day) and air is blown forcefully through the bed is typically referred to as

A) Tray bioreactor B) Packed-bed bioreactor

C) Rotating drum bioreactor D) Gas-solid fluidized bed bioreactor

Wine obtained from which one amongst the following is whitish and effervescent liquid,
both of which properties derive from the fact that the fermenting organisms are numerous
and alive when consumed ?
A) Malus pumila B) Artemesia absinthium
C) Vitis vinifera D) Elaeis guiniensis

Who first of all proposed the utilization of microorganisms as one of the solutions to
the oil recovery issue ?
A) J. W. Beckman in 1926 8) ೦. ‏.ع‎ ZoBell in 1946
C) 8. 8. Schmitt in 1975 D) A.A. Grigoryan

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