Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?

a. excess production of erythropoietin                       

b. decreased production of erythropoietin

c. EpoR that cannot bind STAT5                  

d. EpoR that cannot bind SHP1

e. EpoR that cannot bind JAK2

TLS Online TPP Program

#Question id: 21255

#Unit 12. Applied Biology

Industrially, the most important primary metabolites are amino acids, nucleotides and vitamins, these metabolites are manufactured by__

TLS Online TPP Program

#Question id: 21256

#Unit 12. Applied Biology

Production of l-Glutamic Acid by overproducing glutamate through some microorganism__

TLS Online TPP Program

#Question id: 21257

#Unit 12. Applied Biology

Lysine is a member of the_______________of amino acids.

TLS Online TPP Program

#Question id: 21258

#Unit 12. Applied Biology

Some classes of mutants were obtained from the parental strain as the source of genetic material for transduction:

I) A strain that are resistance to thialysine

II) A strain in which both the threonine-regulated AK and HD were resistant to feedback inhibition by threonine

III) A strain is selected for ß-hydroxynorvaline Sensitive, in which HDI was sensitive to both inhibition and repression and the threonine-regulated AK was constitutively synthesized 

TLS Online TPP Program

#Question id: 21259

#Unit 12. Applied Biology

Production of l-Threonine amino acid used for feeding pigs and poultry, Starting from l-aspartate, the pathway involves five steps catalyzed by five enzymes sequence of using enzyme is that;

TLS Online TPP Program

#Question id: 21260

#Unit 12. Applied Biology

L-Cysteine has traditionally been obtained by extracting it from acid hydrolysates of human hair and animal feathers. High levels cannot be synthesized from glucose because l-cysteine feedback inhibits the enzyme, which catalyzes one of the steps in the biosynthesis of l-cysteine. These enzyme are,