Quick Answer: Why Is The Total Count About 36 Or 38?

Why is ATP 38 or 36?

Calculations giving 36-38 ATP per glucose are based on the assumption that oxidation of NADH produces 3 ATP and oxidation of UQH2 (FADH2, Succinate) produces 2 ATP.

They translocate protons outward across the inner mitochondrial membrane, and the resulting proton gradient is used by the ATP synthase to produce ATP..

Why is the total count about 30 or 32?

Why is the total count of about 30 or 32 ATP molecules rather than a specific number? Organism that only carry out fermentation or anaerobic respiration, cannot survive in the presence of oxygen. Only creates two ATP for each molecule of glucose.

Does glycolysis produce 36 ATP?

Total ATP production from aerobic respiration: 36 ATPs for each glucose that enters glycolysis (2 from glycolysis, 2 from citric acid cycle, 32 from ETP).

How do you get 38 ATP from glucose?

Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

What is anaerobic respiration equation?

Anaerobic respiration takes place in the cell cytoplasm and produces lactic acid. The chemical equation is C6H12O6 -> 2C3H6O3 (Glucose -> Lactic acid). The lactic acid then needs to be oxidised later to carbon dioxide and water afterwards to prevent it building up.

Does NAD+ or NADH have more energy?

NADH is more energetic because it holds more bonds, therefore more energy is required to keep this molecule intact. So when trying to break the bond, it would require more energy to break, and therefore it is also more stable then NAD+. NAD+ is energetically unfavorable because it is a cation.

How many ATP are produced in glycolysis?

2 ATPDuring glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation.

Why do eukaryotes only produce 36 ATP?

Why do eukaryotes generate only about 36 ATP per glucose in aerobic respiration but prokaryotes may generate about 38 ATP? A) eukaryotes have a less efficient electron transport system. … eukaryotes do not transport as much hydrogen across the mitochondrial membrane as prokaryotes do across the cytoplasmic membrane.

Why is being reduced equal to?

Why is being “reduced” equivalent to having a greater potential energy? Electrons repel each other. Adding more electrons to a atom is like pressing down on a spring; the electron wants to spring apart from each other. so just like compressing a spring more, adding electrons increases potential energy of the atom.

How are 32 ATP produced?

In a eukaryotic cell, the process of cellular respiration can metabolize one molecule of glucose into 30 to 32 ATP. The process of glycolysis only produces two ATP, while all the rest are produced during the electron transport chain. The NADH generated from glycolysis cannot easily enter mitochondria. …

What happens when NAD+ is reduced?

In the process of fermentation the NADH + H+ from glycolysis will be recycled back to NAD+ so that glycolysis can continue. In the process of glycolysis, NAD+ is reduced to form NADH + H+. If NAD+ is not present, glycolysis will not be able to continue.

Why the number of ATP is not known exactly?

There are three reasons that we cannot state an exact number of ATP molecules generated by one molecule of glucose. Phosphorylation and the redox reactions are not directly coupled to each other, so the ratio of number of NADH to number of ATP is not a whole number.

How many total carbons are lost as acetyl CoA is oxidized?

twoPyruvate oxidation steps A carboxyl group is removed from pyruvate and released as carbon dioxide. The two-carbon molecule from the first step is oxidized, and NAD+ accepts the electrons to form NADH. The oxidized two-carbon molecule, an acetyl group, is attached to Coenzyme A to form acetyl CoA.

Does cellular respiration make 36 or 38 ATP?

ATP yield during aerobic respiration is not 36–38, but only about 30–32 ATP molecules / 1 molecule of glucose . According to some of newer sources the ATP yield during aerobic respiration is not 36–38, but only about 30–32 ATP molecules / 1 molecule of glucose , because: … ATP synthase produces 1 ATP / 3 H+.

What does cellular respiration release?

During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).

How many ATP can NADH make?

For every pair of electrons transported to the electron transport chain by a molecule of NADH, between 2 and 3 ATP are generated. For each pair of electrons transferred by FADH2, between 1 and 2 ATP are generated.

Does glycolysis require oxygen?

Cell respiration consists of three steps: glycolysis, the Krebs cycle, and respiratory electron transport. The first step by which cells make ATP from food is glycolysis. … Glycolysis requires no oxygen. It is an anaerobic type of respiration performed by all cells, including anaerobic cells that are killed by oxygen.

What does glycolysis release?

Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.