Protein amino acid side chains can hydrogen bond in the major groove of DNA, and discriminate between each of the four possible base pairs.  In which one of the following groups of amino acids can all three members potentially be used in such DNA-protein recognition?

TLS Online TPP Program

#Question id: 2674

#SCPH06 I Botany

Most gene regulation happens at which step along the way?

TLS Online TPP Program

#Question id: 2675

#SCPH05 I Biotechnology

Which of the following statements regarding the trp operon is true?

TLS Online TPP Program

#Question id: 2675

#SCPH06 I Botany

Which of the following statements regarding the trp operon is true?

TLS Online TPP Program

#Question id: 2676

#SCPH05 I Biotechnology

The structural genes of lac operon transcribe mRNA which is

TLS Online TPP Program

#Question id: 2676

#SCPH06 I Botany

The structural genes of lac operon transcribe mRNA which is

TLS Online TPP Program

#Question id: 2677

#SCPH05 I Biotechnology

Why is the transcription of structural genes of the trp operon turned off in the presence of tryptophan?