#Question id: 10345
#Unit 6. System Physiology – Plant
In Leaf Chloroplasts and root plastids contain different forms of the enzyme, nitrite reductase such as
a) Roots contain fd-dependent nitrite reductase
b) Shoots contain NADPH dependent nitrite reductase
c) Shoots contain fd-dependent nitrite reductase
d) Roots contain NADPH dependent nitrite reductase
Which one of the following is correct combination?
#Question id: 10344
#Unit 6. System Physiology – Plant
Some of the following caracteristics of Nitrite reductase, which one of the is incorrect?
#Question id: 10342
#Unit 6. System Physiology – Plant
Nitrate reductase is an important enzyme for nitrate assimilation. Given below some regulation of nitrate reductase activity through phosphorylation and dephosphorylation.
a) Light, and other environmental factors stimulate a protein phosphatase that dephosphorylates a key serine residue in the hinge 1 region of nitrate reductase and thereby activates the enzyme
b) In Dark, and Mg2+ stimulate a protein kinase that phosphorylates the same serine residues, which then interact with a 14-3-3 inhibitor protein, and thereby inactivate nitrate reductase
c) In Light, and Mg2+ stimulate a protein kinase that phosphorylates the serine residues, and thereby activate nitrate reductase
d) In Dark, and other environmental factors stimulate a protein phosphatase that dephosphorylates a key serine residue in the hinge 1 region of nitrate reductase and thereby inactivates the enzyme
Which of the following statements about regulation of nitrate reductase is correct?
#Question id: 10339
#Unit 6. System Physiology – Plant
Nitrate assimilates into the root where the conversion of nitrate to nitrite in the cytosol, a reduction reaction that involves the transfer of two electrons catalyzes by an enzyme that is NAD(P)H dependent is known as
#Question id: 10250
#Unit 6. System Physiology – Plant
Glycolysis involves a series of reactions catalyzed by enzymes located in,
#Question id: 10251
#Unit 6. System Physiology – Plant
Initial phase of glycolysis, substrates from different sources are channeled into triose phosphate. For each molecule of sucrose that is metabolized, four molecules of triose phosphate are formed. This process how much requires ATP input?