Quiz on central pathway

Name the correct intermediate of Krebs cycle (TCA)?

• Phosphogluconate

• Pyruvate
• Malate

• Glucose

Generation of which intermediate in TCA cycle permits the continued flow of hexose carbon through, under conditions where intermediates are removed for biosynthesis.

• oxaloacetate
• citrate
• alpha-ketoglutarate
• acetyl-CoA

Activation of .......................with CoA to form Acetyl CoA and the combined activity of enzyme Isocitritase and malate synthase (provide for C4 cycle) is called as

• Glyoxylate cycle

• Calvin cycle
• C3 photosynthesis
• Krebs cycle

From which intermediate of of Hexose Oxidation, the divergent pathways can lead to Pentose phosphate or ED pathways ?

• Fructose-1,6-bisphosphate
• Glyceraldehyde-3-phosphate
• Pyruvate
• Glucose-6-phosphate

Hexose synthesis that involves reversal of carbon flow from Pyruvate

• Fermentation
• Citric Acid Cycle
• Glycolysis
• Gluconeogenesis

Third bypass reaction required for gluconeogenesis involves ........................ of G-6-P reaction

• dephosphorylation
• reduction
• oxidation
• hydrolysis

Glycogen synthesis in E.coli is regulated at the level of ADP glucose ................ (encoded by .........)

• Phosphorylase, glgC

• dehydrogenase, pyk

• isomerase, tpiK

• dephosphorylase, dlgC

Oxidative phase of Pentose phosphate pathway leads to formation of .............

• ATP and glucose-6-phosphate
• FADH2 and xylulose-5-phosphate
• NADPH and ribulose-5-phosphate
• NADH and fructose-6-phosphate

Ketogluconate pathway is also called as..........

• Glycolytic pathway
• Krebs cycle
• Pentose phosphate pathway
• Entner-Doudoroff pathway

Which intermediate represents the pivotal point in the krebs cycle?

• Fumarate
• Oxaloacetate
• Acetyl-CoA
• Malate