By the end of _______________ , distribution of cells into the three primary tissue types has been completed

#Question id: 2634

#Unit 2. Cellular Organization

Tryptophan, the end-product of the enzymes encoded by the trp operon, therefore acts as a co-repressor and inhibits its own synthesis through:

#Question id: 2635

#Unit 2. Cellular Organization

In E. coli, deleting the ribosome binding site and region 1 of the trp attenuator and leaving the remainder of the attenuator intact has which of the following effects?

#Question id: 2636

#Unit 2. Cellular Organization

Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site

#Question id: 2636

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site

#Question id: 2637

#Unit 2. Cellular Organization

Which of these operons is anabolic?

#Question id: 2638

#Unit 2. Cellular Organization

Which of these systems give the best mode for turning trp operon off?