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TLS Online TPP Program

#Question id: 2675

Which of the following statements regarding the trp operon is true?

#Unit 2. Cellular Organization

  1. The operator region produces the mRNA that codes for the repressor.

  2. Repressor proteins are inactivated by the presence of the repressor.

  3. The regulatory gene is not transcribed in the presence of the repressor.

  4. The trp operon is always activated unless deactivated by a repressor.

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TLS Online TPP Program

#Question id: 27083

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly describing the differences between β Turn type I & β Turn type II

(1) type I & II i + 1 values differ only in psi values 

(2) type I & II i + 1 values differ only in phi values 

(3) type I & II i + 2 values differ only in phi values 

(4) type I & II i + 2 values differ only in psi values
TLS Online TPP Program

#Question id: 377

#Unit 1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the highest pH is:
TLS Online TPP Program

#Question id: 33907

#Unit 2. Cellular Organization

A circular DNA molecule with 580,070 bp. Calculate the molecular weight and contour length (when relaxed) of this molecule. What is Lko for the Mycoplasma chromosome? If σ=-  0.06, what is Lk?
TLS Online TPP Program

#Question id: 11599

#Unit 6. System Physiology – Plant

Where the highest levels of gibberellins are found?
TLS Online TPP Program

#Question id: 12888

#General Aptitude

The length of the perpendiculars drawn from any point in the interior of an equilateral triangle to the respective sides are p1, p2 and p3. The length of each side of the triangle is