What is the net yield of adenosine triphosphate (ATP) molecules obtained from the breakdow… — JAMB UTME

What is the net yield of adenosine triphosphate (ATP) molecules obtained from the breakdown of one molecule of glucose during anaerobic respiration?

The net yield of ATP molecules obtained during anaerobic respiration is

2

During anaerobic respiration, glucose undergoes glycolysis in the cytoplasm. Although glycolysis produces

4\text{ ATP}

molecules in total,

2\text{ ATP}

molecules are used during the phosphorylation steps, leaving a net gain of

2\text{ ATP}

molecules per glucose molecule.

Identify the metabolic pathway operating under anaerobic conditions.

In the absence of oxygen, cellular respiration is restricted to glycolysis.

Pyruvate cannot enter the mitochondria to undergo the link reaction, Krebs cycle, or oxidative phosphorylation without oxygen.

Calculate the net ATP energy yield from glycolysis.

Gross ATP produced (

4

) minus ATP invested (

2

) equals a net yield of

2\text{ ATP}

Two ATP molecules are consumed during the activation steps converting glucose to fructose-1,6-bisphosphate.

Net ATP accounting in anaerobic respiration

Question