Which of the following types of non-covalent bonds or interactions is responsible for forming the α helix and β sheet secondary structural motifs of a protein:

#Question id: 4381

#SCPH28 | Zoology

All the following statements about heterochromatin are true except:

#Question id: 10283

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

How to Phosphofructokinase-1 (PFK-1) and Fructose 1,6-Bisphosphatase are reciprocally regulated ?

a) ATP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate

b) citrate is also an allosteric regulator of PFK-1, high citrate concentration increases the inhibitory effect of ATP

c) FBPase-1, is strongly inhibited (allosterically) by AMP; when the cell’s supply of ATP is low (corresponding to high AMP), the ATP-requiring synthesis of glucose slows

d) AMP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate

Which of the following statements of regulation of enzyme is correct?

#Question id: 11595

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

Paclobutrazol and other inhibitors of P450 monooxygenases specifically inhibit the stage of gibberellin biosynthesis

#Question id: 420

#SCPH28 | Zoology

The structure of NAD+ does not include:

#Question id: 938

#SCPH05 I Biotechnology

Physiological roles for glutamate dehydrogenase include all of the following, except