Practice Questions

TLS Online TPP Program

#Question id: 12914

In Electrophoresis of DNA the gel is first soaked in the alkali then it is transferred to the membrane so that the ________

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

DNA is not bound to it in exactly the same pattern as the original.
DNA becomes bound to it in exactly the complementary pattern as the original.
DNA becomes bound to it in exactly the same pattern as the primer.
DNA becomes bound to it in exactly the same pattern as the original.

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TLS Online TPP Program

#Question id: 14413

#Section 2: General Biology

Which of the following cannot be used to sterilize a heat-labile solution stored in a plastic container?

TLS Online TPP Program

#Question id: 14414

#Section 2: General Biology

How Aldehydes work as effective antimicrobial agent?

TLS Online TPP Program

#Question id: 14415

#Section 2: General Biology

Which of the following physical sterilization processes can denature proteins?

3. Pasteurization

4. Refrigeration

Choose the incorrect combination.

TLS Online TPP Program

#Question id: 14416

#Section 2: General Biology

Bacteriostatic and Bactericidal functions can be achieved by

TLS Online TPP Program

#Question id: 14417

#Section 5: Bioprocess Engineering and Process Biotechnology

Which size is suitable for following, match the following?

Products filter 'pore diameter( nm)

I. yeast and fungi P• 0.6-1.2

II. Bacteria q . 0.4- 0.8

III. Antibiotics r. 300-10^3

IV. Organic acid s. 10^3- 10^4

TLS Online TPP Program

#Question id: 14418

#Section 5: Bioprocess Engineering and Process Biotechnology

It is required to provide a 20-m^3 fermenter with air at a rate of 10 m^3 min ^-I for a fermentation lasting 100 hours. From an investigation of the filter material to be used, the optimum linear air velocity was shown to be 0.15 m sec^-I, at which the value of K was 1.535 cm^-I. calculate The dimensions (radius and depth) of the filter? The air in the fermentation plant contained approximately 200 micro-organisms m^-3. The acceptable degree of contamination is one in a thousand.