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: 10502

#SCPH05 I Biotechnology

Arabidopsis roots in iron-deficient growth media, thereby facilitating increased iron uptake. The resulting increase in iron content of the plants by

#Question id: 14286

#SCPH05 I Biotechnology

#Question id: 963

#SCPH28 | Zoology

________ is hydrolytically cleaved to directly yield urea in the urea cycle.

#Question id: 10354

#SCPH06 I Botany

One of the enzyme that are involve in the ammonium assimilation is Asparagine synthetase (AS), some statements given below about AS such as,

a) This enzyme that catalyzes this reaction, is found in the cytosol of leaves and roots and in nitrogen-fixing nodules

b) High levels of light and carbohydrate inhibit the expression of genes coding for AS and the activity of the enzyme

c) Conditions of ample energy stimulate AS, thus they favor nitrogen assimilation into glutamine and glutamate

d) Energy-limited conditions inhibit GS and GOGAT, stimulate AS, and thus favor nitrogen assimilation into asparagine, a compound that is rich in nitrogen and sufficiently stable for long-distance transport or long term storage

Which of the following statements about AS is correct?

#Question id: 10786

#I Life Science/ Life Sciences Group – I-V

Alkaloids are usually synthesized from one of a few common amino acids such as___