TLS Online TPP Program
More Questions
TLS Online TPP Program
#Question id: 24222
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following reaction of glycolysis is irreversible
1. Glucose is converted to glucose 6-phosphate in the presence of the enzyme hexokinase.
2. Fructose 6-phosphate is converted to fructose 1,6-biphosphate in the presence of the enzyme phosphofructokinase.
3. Phosphoenolpyruvate is converted to pyruvate in the presence of the enzyme pyruvate kinase.
4. isomerization of glucose 6-phosphate to fructose 6-phosphate
TLS Online TPP Program
#Question id: 24221
#Unit 1. Molecules and their Interaction Relevant to Biology
Glucagon lowers the cellular level of fructose 2,6 bisphosphate by
TLS Online TPP Program
#Question id: 24220
#Unit 1. Molecules and their Interaction Relevant to Biology
Glucagon stimulates cAMP from ATP. Cyclic AMP then activates cAMP-dependent protein kinase, phosphorylates PFK-2/FBPase-2. Phosphorylation of this protein enhances its FBPase-2 activity and inhibits its PFK-2 activity resulting
TLS Online TPP Program
#Question id: 24219
#Unit 1. Molecules and their Interaction Relevant to Biology
When Fructose 2,6-bisphosphate binds to its allosteric site on PFK-1 results
TLS Online TPP Program
#Question id: 24218
#Unit 1. Molecules and their Interaction Relevant to Biology
Phosphorylation of fructose 6-phosphate, catalysed by
TLS Online TPP Program
#Question id: 24217
#Unit 1. Molecules and their Interaction Relevant to Biology
Choose the correct statement of the following
a. In general, high acetyl-CoA or citrate are present, or when a high proportion of the cell’s adenylate is in the form of ATP, gluconeogenesis is favored.
b. When the level of AMP increases, it promotes glycolysis by stimulating PFK-1 by inhibiting FBPase-1
c. Phosphorylation of fructose 6-phosphate, catalysed by phosphofructokinase-2 (PFK-2)
d. Glucagon increases the cellular level of fructose 2,6 bisphosphate, stimulating glycolysis and inhibiting gluconeogenesis.