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TLS Online TPP Program

#Question id: 9605

A phylogenetic tree that is ʺrootedʺ is one

#Unit 9. Diversity of Life Forms
  1. that extends back to the origin of life on Earth.
  2. at whose base is located the common ancestor of all taxa depicted on that tree.
  3. that illustrates the rampant gene swapping that occurred early in lifeʹs history.
  4. that indicates our uncertainty about the evolutionary relationships of the taxa depicted on the tree.
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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.
TLS Online TPP Program

#Question id: 24216

#Unit 1. Molecules and their Interaction Relevant to Biology

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 then