Shell coiling in snail determine by genetic maternal effect. S for dextral and s for sinistral.  Following cross allowed between

Male	Female	Progeny   (Genotype)
Dextral	sinistral	Dextral (K1)
Dextral	Sinistral	Sinistral (K2)
Sinistral	sinistral	Dextral (K3)
Dextral	Dextral	Sinistral (K4)

Which of the following progeny not have SS genotype?

#Question id: 10337

#Unit 6. System Physiology – Plant

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: 10338

#Unit 6. System Physiology – Plant

Nitrate from the soil solution actively absorb by Plant roots via several low- and high-affinity transporters known as

#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: 10340

#Unit 6. System Physiology – Plant

There several charecteristics of nitrate reductase, which of the following properties of nitrate reductase is incorrect?

#Question id: 10341

#Unit 6. System Physiology – Plant

The accumulation of nitrate that results from diminished nitrate reductase activity, this symptoms is caused by

#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?