TLS Online TPP Program

#Question id: 3988


The tryptophan operon of E. coli is repressed by tryptophan added to the growth medium.  The tryptophan repressor probably:

#Unit 3. Fundamental Processes
  1. binds to RNA polymerase when tryptophan is present.

  2. binds to the trp operator in the absence of tryptophan.

  3. binds to the trp operator in the presence of tryptophan.

  4. is a DNA sequence.

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TLS Online TPP Program

#Question id: 30071

#Unit 7. System Physiology – Animal

According to graph, match the following:

TLS Online TPP Program

#Question id: 30072

#Unit 7. System Physiology – Animal

Which of the following combination correctly represents A, B, C, & D?
i. Diastasis
ii. Atrial systole
iii. Isovolumic contraction
iv. Isovolumic relaxation

TLS Online TPP Program

#Question id: 30073

#Unit 7. System Physiology – Animal

Following graph represents volume and pressure in ventricles. According to graph which of the following events correctly represents A & B  respectively?


TLS Online TPP Program

#Question id: 30074

#Unit 2. Cellular Organization

Following statements were made about transposons:
A. Transposons have inverted terminal repeats and their integration generates inverted repeats at the flanks of the target site in the host genome.
B. A composite transposon can transpose as a unit.
C. The transposition event may cause deletions or inversions or move a host sequence to a new location.
D. The transposition event may cause deletions or inversions but cannot move a host sequence to a new location.
E. Replicative transposition proceeds through cointegration.

Which one of the following represents the combination of the correct statements?

TLS Online TPP Program

#Question id: 30075

#Unit 2. Cellular Organization

The enzyme that catalyzes the transposition of an IS element is called __________

TLS Online TPP Program

#Question id: 30076

#Unit 2. Cellular Organization

Direct repeats in the IS element are present __________