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TLS Online TPP Program

#Question id: 3878

Which of the following statements about the synthesis of rRNA and tRNA in E. coli is true?

#SCPH01 Biochemistry

  1. Both rRNA and some tRNAs are part of the same primary transcript.

  2. Each rRNA sequence (16S, 23S, 5S) is transcribed into a separate primary transcript.

  3. Primary tRNA transcripts undergo methylation, but rRNA sequences are not methylated.

  4. The tRNA sequences all lie at the 3’end of the rRNA transcripts

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TLS Online TPP Program

#Question id: 14289

#SCPH05 I Biotechnology

In a fermenter the impeller diameter is increased from 0.5m to 1m and the rpm is increased from 100 rpm to 400 rpm. Reynolds number will increase by?
TLS Online TPP Program

#Question id: 14289

#SCPH05 I Biotechnology

In a fermenter the impeller diameter is increased from 0.5m to 1m and the rpm is increased from 100 rpm to 400 rpm. Reynolds number will increase by?
TLS Online TPP Program

#Question id: 14290

#SCPH05 I Biotechnology

Acetobacter aceti converts alcohol to acetic acid according to the schiometric relation

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16g/l acetic acid and 2g/l was the residual ethanol concentration what are the theoretical and observed yields of acetic acid expressed in g/g ethanol
TLS Online TPP Program

#Question id: 14290

#SCPH05 I Biotechnology

Acetobacter aceti converts alcohol to acetic acid according to the schiometric relation

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16g/l acetic acid and 2g/l was the residual ethanol concentration what are the theoretical and observed yields of acetic acid expressed in g/g ethanol
TLS Online TPP Program

#Question id: 14291

#SCPH05 I Biotechnology

In a batch sterilization process if  overall,  heating &  cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121^o-C of the process is (given that the specific death rate (k) of microorganisms at 121^o-C is 2.54 min-1 ):
TLS Online TPP Program

#Question id: 14291

#SCPH05 I Biotechnology

In a batch sterilization process if  overall,  heating &  cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121^o-C of the process is (given that the specific death rate (k) of microorganisms at 121^o-C is 2.54 min-1 ):