E. coli was grown aerobically in batch fermentation. The initial concentration of cells was 1x 103/ml and it reached 1x106/ml in 10 hours. Calculate specific growth rate. Options:

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?

1. Boiling

2. Autoclaving

3. Pasteurization

4. Refrigeration

5. Ionizing

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.

______________

TLS Online TPP Program

#Question id: 14419

#Section 5: Bioprocess Engineering and Process Biotechnology

 The equation for Del factor is