How would anaerobic conditions affect the rate of electron transport?

How would anaerobic conditions affect the rate of electron transport?

In the absence of oxygen, electron transport stops. NADH is no longer converted to NAD+, which is needed for the first three stages of cellular respiration.

Which of following is the common pathway for the oxidation of glucose and fatty acids?

The citric acid cycle is the final common pathway for the oxidation of carbohydrate, lipid, and protein because glucose, fatty acids, and most amino acids are metabolized to acetyl-CoA or intermediates of the cycle.

What does it mean to say that glycolysis is an anaerobic process?

Glycolysis produces 2 ATP per glucose molecule, and thus provides a direct means of producing energy in the absence of oxygen. This process of breaking down glucose in the absence of oxygen is aptly named anaerobic glycolysis.[1]

What would be the effect of high concentrations of ATP quizlet?

Although ATP is one of the substrates of PFK-1, high concentration of ATP saturates the catalytic site. This increases the binding of ATP to the allosteric site, inhibiting the PFK-1. Increased ATP concentration, decreases glucose flux through glycolysis as the key enzyme, PFK-1, is inhibited.

Under which condition is Phosphofructokinase more active?

PFK is more active at low ATP concentration.

What is not a net output of glycolysis?

In glycolysis, the six-carbon sugar glucose is converted to two molecules of pyruvate (three carbons each), with the net production of 2 ATP and 2 NADH per glucose molecule. There is no O2 uptake or CO2 release in glycolysis.

Which of the following is an anaerobic process?

Examples of anaerobic processes are glycolysis and fermentation.

What would be the effect of high concentrations of ATP?

In glycolysis, cells that can stop the glycolytic reactions when ATP is too much can conserve their stores of glucose for times when ATP is scarce. If ATP concentrations are high, instead of the ATP molecule binding to an enzyme’s active site, it can bind at regulatory site on phosphofructokinase.

Why is PFK inhibited by ATP?

ATP is a natural allosteric inhibitor of PFK, in order to prevent unnecessary production of ATP through glycolysis. However, a mutation in Asp(543)Ala can result in ATP having a stronger inhibitory effect (due to increased binding to PFK’s inhibitory allosteric binding site).