The trp operon is controlled by repression and attenuation, providing a two-stage response to progressively more stringent tryptophan starvation. But attenuation alone can provide robust regulation: other amino acid operons such as leu and his rely entirely on attenuation for their control. Correct number of codons in leader peptide of leu & his operon  in a row;

TLS Online TPP Program

#Question id: 29512

#Unit 6. System Physiology – Plant

Which of the following is a major glucosinolate of black mustard seeds and horseradish roots

TLS Online TPP Program

#Question id: 28221

#Unit 5. Developmental Biology

The ability of a cells to form all embryonic cells only is called__

TLS Online TPP Program

#Question id: 1080

#Unit 4. Cell Communication and Cell Signaling

 In the formation of biofilms, such as those forming on unbrushed teeth, cell signaling serves which function?

TLS Online TPP Program

#Question id: 24660

#Unit 2. Cellular Organization

Which of the following transporters cause antibiotic resistance in pathogenic microbes such as Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans, Neisseria gonorrhoeae, and Plasmodium falciparum?

TLS Online TPP Program

#Question id: 4998

#Unit 11. Evolution and Behavior

Many species of snakes lay eggs, but in the forests of northern Minnesota where growing seasons are short, only live-bearing snake species are present. This trend toward species that perform live birth is an example of