Practice Questions

TLS Online TPP Program

#Question id: 14237

A genetically-engineered strain of yeast is cultured in a bioreactor at 30⁰C for production of heterologous protein. The oxygen requirement is 80 mmol 1-1 h-I; the critical oxygen concentration is 0.004 mM. The solubility of oxygen in the fermentation broth is estimated to be 10% lower than in water due to solute effects. What is the minimum mass-transfer coefficient necessary to sustain this culture if the reactor is sparged with air at approximately 1 atm pressure ?

#Part-B Specialized Branches in Biotechnology

0.10s^-1
0.24 s^-1
0.50^-1
0.54s^-1

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TLS Online TPP Program

#Question id: 11858

#Part-A Aptitude & General Biotechnology

A, B and C start at the same time in the same direction to run around a circular stadium . A completes a round in 252 seconds , B in 308 seconds and C in 198 seconds all starting at the same point . After what time will they meet again at the starting point ?

TLS Online TPP Program

#Question id: 11859

#Part-A Aptitude & General Biotechnology

Six bells commence tolling together and toll at intervals of 2,4,6,8,10,and 12 seconds respectively . In 30 minutes , how many times do they toll together ?

TLS Online TPP Program

#Question id: 11860

#Part-A Aptitude & General Biotechnology

The traffic lights at three different road crossing change after every 48 sec , 72 sec, and 108 sec. Respectively . If they all change simultaneously at 8 : 20 : 00 hours , then at what time will they again change simultaneously ?

TLS Online TPP Program

#Question id: 11861

#Part-A Aptitude & General Biotechnology

Four metal rods of lengths 78 cm , 104 cm , 117 cm and 169 cm are to be cut into parts of equal length. Each part must be as long as possible . What is the maximum number of pieces that can be cut ?