Practice Questions

TLS Online TPP Program

#Question id: 3990

Which of the following statements is true of the attenuation mechanism used to regulate the tryptophan biosynthetic operon in E. coli?

#Unit 3. Fundamental Processes

Attenuation is the only mechanism used to regulate the trp operon.
One of the enzymes in the Trp biosynthetic pathway binds to the mRNA and blocks translation when tryptophan levels are high.
The leader peptide plays a direct role in causing RNA polymerase to attenuate transcription.
Trp codons in the leader peptide gene allow the system to respond to tryptophan levels in the cell.

More Questions

TLS Online TPP Program

#Question id: 2163

#Unit 2. Cellular Organization

Osmosis

TLS Online TPP Program

#Question id: 15211

#Unit 13. Methods in Biology

Micro-RNA or small molecule of RNA can be separated by using

TLS Online TPP Program

#Question id: 27933

#Unit 11. Evolution and Behavior

The evolutionary change happening below the level of species

TLS Online TPP Program

#Question id: 12407

#Unit 6. System Physiology – Plant

ABA is synthesized via _____A________, the biosynthetic processes occur in_____B_____and ____C_____.

TLS Online TPP Program

#Question id: 66

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements regarding isomerism is incorrect regarding biomolecules?