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

TLS Online TPP Program

#Question id: 9274

#Unit 6. System Physiology – Plant

The different types of carotenoids found in photosynthetic organisms, the all carotenoids are

TLS Online TPP Program

#Question id: 15680

#Unit 2. Cellular Organization

A common environmental organism that may even grow in certain chemical disinfectants is

TLS Online TPP Program

#Question id: 9593

#Unit 6. System Physiology – Plant

The lower-energy orbital of the positively charged oxidized reaction centre chlorophyll has a vacancy and can accept an electron If the acceptor molecule donates its electron back to the reaction centre chlorophyll, What will happened?

TLS Online TPP Program

#Question id: 11379

#Unit 10. Ecological Principles

Which of the following is NOT a prediction arising out of Wilson-MacArthur's -Theory of Island Biogeography?

TLS Online TPP Program

#Question id: 15741

#Unit 5. Developmental Biology

The region of the Y chromosome have a male-specific DNA sequence that encodes a peptide of 223 amino acids. This gene is called: