#Question id: 2102
#SCPH01 Biochemistry
In which of the following environments would there be the greatest need for osmoregulation?
#Question id: 10342
#I Life Science/ Life Sciences Group – I-V
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: 8291
#SCPH06 I Botany
Which of the following pairs are the best examples of homologous structures?
#Question id: 4724
#SCPH01 Biochemistry
Which of the following are true about crossing over ?
#Question id: 11011
#I Life Science/ Life Sciences Group – I-V
Which of the following conditions at the S-A node will cause heart rate to decrease?