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TLS Online TPP Program

#Question id: 2632

How would transcription of the E. coli trp operon be affected,

I. If Removing sequence 4;

II. Changing several nucleotides in sequence 3 so that it can base-pair with sequence 4 but not with sequence 2;

#SCPH01 Biochemistry

  1. I-No attenuation of transcription.

  2. I & II- The only regulation would be that afforded by the Trp repressor.

  3. II-Constant attenuation of transcription. Attenuator always forms, regardless of the availability of tryptophan.

  4. Only A & C

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TLS Online TPP Program

#Question id: 15702

#SCPH01 Biochemistry

Following are few sterilization techniques and materials used in plant tissue culture. Identify the correct combinations.
TLS Online TPP Program

#Question id: 4156

#SCPH06 I Botany

The reading frame of DNA is fixed by
TLS Online TPP Program

#Question id: 14116

#SCPH05 I Biotechnology

Which of the following statements are CORRECT when a protein sequence database is searched using the BLAST algorithm? 
P. A larger E-value indicates higher sequence similarity 
Q. E-value < 10^-10 indicates sequence homology 
R. A higher BLAST score indicates higher sequence similarity 
S. E-value > 10^10 indicates sequence homology 
TLS Online TPP Program

#Question id: 3516

#SCPH01 Biochemistry

Cross allowed between pure line tall plant with pure line dwarf plant , all F1 having tall phenotype were allowed to self to produced  200 plant The number of F2 plant having pure line tall phenotype?
TLS Online TPP Program

#Question id: 12926

#SCPH05 I Biotechnology

PCR is undertaken with a fluorescence reporter / quencher pair called______