#Question id: 10354
#Life Sciences
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: 10355
#Life Sciences
The conversion of ammonium to amino acids requires two enzymes such as GS and GOGAT,
a) High levels of light and carbohydrate—conditions that stimulate plastid GS and Fd-GOGAT
b) Conditions of ample energy inhibit GS and GOGAT
c) The stimulation of GS and GOGAT, they favor nitrogen assimilation into glutamine and glutamate, compounds that are rich in carbon and participate in the synthesis of new plant materials
d) In energy-limited conditions inhibit GS and GOGAT
Which of the following statements about GS and GOGAT is correct?
#Question id: 10356
#Life Sciences
Why the GS and GOGAT is activated in light and while the AS is inhibited?
#Question id: 10337
#Applied Microbiology
In biological nitrogen fixation, the process of nitrification by organism respective bacteria A--which convert the ammonia to nitrite and B--- further converted into nitrate in the soil by their respective A and B bacteria known as;
#Question id: 10343
#Applied Microbiology
In many plants, nitrate is assimilated in the root as well as in the shoot according to their native place. Some of the given statements about nitrate assimilation;
a) If plants native to temperate region assimilate NO3- at root
b) If plants native to temperate region assimilate NO3- at shoot
c) Plants native to tropical or subtropical region assimilate NO3- at root
d) Plants native to tropical or subtropical region assimilate NO3- at shoot
Which of the following combination from above statements is correct?
#Question id: 10346
#Applied Microbiology
Nitrite reductase will convert nitrite to ammonium. There are two types of nitrite reductase characteristics given below;
a) Both nitrite reductase consist of a single 63kD polypeptide
b) In leaf chloroplasts and root plastids contain different forms of the nitrite reductase enzyme
c) In shoot nitrite reductase directly dependent on the light reaction by the ferredoxin, it activates nitrite reductase in choloroplast
d) NADPH in the roots is provided by pentose phosphate pathway, it also activate nitrite reductase in the plastids
Which of the correct statement about nitrite reductase characteristics?