The complete oxidation of glucose release about

The glycolytic degradation of glucose to two molecules of pyruvate releases most of the energy of glucose.

All glycolytic enzymes are globular water soluble proteins.

When twenty moles of glucose undergo glycolysis, forty moles of pyruvate are produced.

Hexokinase, requires Mg2+ for its activity. Mg2+ is a coenzyme.

A reaction with a standard free energy change of - 30 kJ/mol is considered irreversible.

Irreversible reactions are points of regulation in pathways.

Step 1 of glycolysis is called the “committed step” and it is a point of regulation.

In the first 5 steps of glycolysis, energy is extracted in the form of two molecules of ATP.

Carbon oxidation reactions are exergonic.

The formation of a molecule containing an acylphosphate group is a favorable reaction.

In step 6 of glycolysis, the oxidation of the aldehyde group of glyceraldehyde-3 -phosphate is an exergonic reaction that drives the phosphorylation of the carboxyl intermediate.

Step 8 of glycolysis consists in the migration of the phosphoryl group between of C-2 to C-3.

Phosphoenolpyruvate (PEP) has the highest delta G of hydrolysis of all compounds involved in glycolysis.

Steps 1, 3 and 10 of glycolysis are irreversible.

When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexose isomerase, the final mixture contains twice as much glucose 6-phosphate as fructose 6-phosphate. Which one of the following statements is most nearly correct, when applied to the reaction below (R = 8.315 J/mol·K and T = 298 K)? Glucose 6-phosphate ↔ fructose 6-phosphate

In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (DeltaG'°) of 23.8 kJ/mol. Under what conditions (encountered in a normal cell) will the free-energy change (DeltaG) be negative, enabling the reaction to proceed to the right?

  

Which of the following reactions in glycolysis is a ketose to aldose isomerization?

The steps of glycolysis between glyceraldehyde 3-phosphate and 3-phosphoglycerate involve all of the following except:

Which of the following is a cofactor in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase?

Which of the following statements is not true concerning glycolysis in anaerobic muscle?

What is the purpose of phosphorylating glucose in the cytosol?

What two 3-carbon molecules are generated by the cleavage of fructose-1,6-bisphosphate?

What reaction is catalyzed by aldolase?

What is the function of glyceraldehyde 3-phosphate dehydrogenase?

What is substrate level phosphorylation?

What is the additional metabolite that is required for the conversion of 3-phosphoglycerate to 2-phosphoglycerate?

A kinase is an enzyme that

For every one molecule of sugar glucose which is oxidized, __________ molecule of pyruvic acid are produced.

When concentration of the reactants is kept high,

Which of the following is not true of glycolysis?

The enzyme that transfers a phosphate group to fructose-6-phosphate in glycolysis

The enzyme that catalyzes the second substrate level phosphorylation of glycolysis

Which is the best statement?

The first phase of glycolysis (preparatory stage) produces 2 ATP.

The second phase of glycolysis converts two trioses into two pyruvates

The second phase of glycolysis produces 4 ATP

Phosphorylation steps in the first phase (preparatory phase) of glycolysis tend to be reversible.

At the end of which stage of glycolysis does the production of ATP finally pay off the ATP debt of the preparatory phase?

Which steps in glycolysis produce ATP?

Glycolysis produces a net of ________ moles of ATP per 1 mole of glucose.

In the payoff phase of glycolysis ATP is made through the process of:

Which of the following is not a requirement for glycolysis?

Which molecule is an isomer of Glyceraldehyde-3-Phosphate (G3P)?

NAD+ is oxidized to NADH in step 6 of glycolysis.

Much of the free energy of oxidation of the aldehyde group of glyceraldehyde-3- phosphate is conserved by formation of the acyl phosphate group.

The oxidatative phosphorylation of glyceraldehyde-3-phosphate does not require ATP, but an inorganic phosphate dissolved in the cytosol.

2-phosphoglycerate and 3-phosphoglycerate are isomers.

The phosphoryl group of 2-phosphoglycerate comes from a phosphorylated histidine on the active site of phosphoglyceromutase.