In Cells Relying Exclusively Upon Glycolysis and Substrate-Level Phosphorylation for ATP

question 44

Multiple Choice

In cells relying exclusively upon glycolysis and substrate-level phosphorylation for ATP production, why is the production of reduced intermediates from pyruvate so essential?

• A)Reduction of pyruvate also allows for the reduction of NADH, providing NAD⁺ which is an essential substrate for the activity of glyceraldehyde phosphate dehydrogenase.
• B)Reduction of pyruvate allows for the oxidation of NADH, providing NAD⁺ which is an essential substrate for the activity of glyceraldehyde phosphate dehydrogenase.
• C)Reduction of pyruvate also allows for the reduction of NADH, providing NAD⁺ which is an essential substrate for the activity of triose phosphate isomerase.
• D)Reduction of pyruvate allows for the oxidation of NADH, providing NAD⁺ which is an essential substrate for the activity of triose phosphate isomerase.

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Definitions:

Inductance

The property of an electrical conductor that causes it to oppose a change in the current flowing through it, stored in the magnetic field created by the current.

Henry

The SI unit of inductance, defined as the inductance in a circuit when an electromotive force of one volt is produced by a current changing at one ampere per second.

Left-hand Generator Rule

A rule used to determine the direction of induced current when a conductor moves through a magnetic field, utilizing the left hand to align thumb, forefinger, and middle finger perpendicularly.

Magnetic Field

A magnetic field is a vector field that surrounds magnets and electric currents, exerting magnetic forces on moving electric charges and magnetic materials.