Glycolysis and Fermentation Quiz

What is the final product of glycolysis?

• Glucose

• Pyruvate

• Lactate

• Acetaldehyde

In the electron transport chain, what is the role of NADH produced during glycolysis?

• Acts as a substrate for glycolysis

• Is oxidized to regenerate NAD⁺

• Is converted to ATP directly

• Is stored in the cytoplasm

What is the net gain of ATP molecules from one molecule of glucose during glycolysis?

• 2 ATP

• 4 ATP

• 6 ATP

• 8 ATP

What is the main purpose of fermentation pathways in the absence of oxygen?

• To produce more ATP

• To regenerate NAD⁺ from NADH

• To produce glucose

• To store energy

What is the effect of an allosteric inhibitor on an enzyme?

• It increases the affinity of the enzyme for its substrate, leading to an increase in products.

• It decreases the affinity of the enzyme for its substrate, leading to a decrease in products.

• It has no effect on the enzyme's affinity for its substrate.

• It converts the enzyme into an inactive form permanently.

Which enzyme is not an allosteric regulator of glycolysis?

• Pyruvate kinase

• Hexokinase

• Phosphofructokinase

• Aldolase

What is the significance of phosphate transfer potential in cellular metabolism?

• It determines the direction of electron flow in the electron transport chain.

• It determines the ability of molecules to act as substrates for enzymes.

• It determines the efficiency of ATP synthesis.

• It determines the ability of molecules to transfer phosphate groups in metabolic reactions.

In which type of cells does lactic acid fermentation commonly occur?

• Yeast cells

• Muscle cells

• Plant cells

• Bacterial cells

How many molecules of NADH are produced per molecule of glucose during glycolysis?

• 1 NADH

• 2 NADH

• 3 NADH

• 4 NADH

Which of the following is not an end product of glycolysis?

• NAD⁺

• ATP

• NADH

• Pyruvate