TLS Online TPP Program

#Question id: 7061


In placental mammals, delayed implantation usually occurs when the

#Unit 5. Developmental Biology
  1. embryo is at the blastocyst stage.
  2. fertilized egg is at the 4-cell stage.
  3. embryo is at the trophoblast stage.
  4. embryo is in the middle of the placental stage.
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TLS Online TPP Program

#Question id: 4121

#Unit 3. Fundamental Processes

The transition from the closed to the open complex involves structural changes in the enzyme and the opening of the DNA double helix to reveal the template and nontemplate strands. This “melting” involves

A. Isomerization reaction and it does not require energy derived from ATP hydrolysis

B. Isomerization is essentially irreversible and, once complete, typically guarantees that transcription will subsequently initiate

C. Positions –11 and -2, with respect to the transcription start site.

TLS Online TPP Program

#Question id: 4122

#Unit 3. Fundamental Processes

RNA Pol uses its active site, in a simple back-reaction, to catalyze the removal of an incorrectly inserted ribonucleotide. This phenomenon known as

TLS Online TPP Program

#Question id: 4349

#Unit 3. Fundamental Processes

RNA Pol IV and Pol V

TLS Online TPP Program

#Question id: 4350

#Unit 3. Fundamental Processes

Portions of the DNA sequences of normal and mutant b-globin genes are shown. The most plausible explanation for why the indicated mutation (changing an A to a G) results in the disease b-thalassemia is that the mutation

TLS Online TPP Program

#Question id: 24464

#Unit 3. Fundamental Processes

rRNA are encoded by two type of RNA pol. RNA pol I and RNA pol III in which 5.8s rRNA is encodes by …………. While 5s rRNA encoded by ……

TLS Online TPP Program

#Question id: 24465

#Unit 3. Fundamental Processes

Which of the following is incorrectly matched