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Which molecules are required for anaerobic respiration?

Which molecules are required for anaerobic respiration?

Anaerobic respiration

  • During anaerobic respiration, the oxidation of glucose is incomplete – not all of the energy can be released from the glucose molecule as it is only partially broken down.
  • glucose → lactic acid (+ ATP made)
  • The lactic acid is a waste product.
  • glucose → ethanol + carbon dioxide (+ ATP made)

What is the starting molecule of anaerobic respiration?

Both start with glycolysis, the first (anaerobic) stage of cellular respiration, in which two molecules of ATP are produced from one molecule of glucose. Alcoholic fermentation is carried out by single-celled organisms, including yeasts and some bacteria.

Which molecules are products of aerobic and anaerobic cell respiration in some organisms?

Comparison chart

Aerobic Respiration Anaerobic Respiration
Products Carbon dioxide, water, ATP Carbon dixoide, reduced species, ATP
Site of reactions Cytoplasm and mitochondria Cytoplasm and mitochondria
Reactants glucose, oxygen glucose, electron acceptor (not oxygen)
combustion complete incomplete

How do anaerobic bacteria respire?

They are called the anaerobes or anaerobic bacteria. A good example of this type are the bacteria which decompose glucose to form alcohol and carbon dioxide. Anaerobic respiration is accomplished by the secretion of certain oxidizing enzymes. The latter bring about breakdown of foods.

What does anaerobic process require?

Key Terms

Term Meaning
Aerobic Process that requires oxygen
Anaerobic Process that does not require oxygen
Fermentation An anaerobic pathway for breaking down glucose

Which pair of molecules are products of aerobic respiration?

Carbon dioxide + Water Glucose (sugar) + Oxygen CO2 + H2O C6H12O6 + 6O2 Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.

What compound is a waste product of anaerobic respiration in humans?

Carbon dioxide and water are produced as the waste products. Anaerobic respiration takes place without the use of oxygen, produces small amounts of energy. Alcohol or lactic acid or other compounds are produced as waste products depending on the kind of cells that are active.

Does anaerobic respiration require cytochromes?

In aerobic respiration cytochrome c carries the electrons from cytochrome bc1 (Complex III) to cytochrome aa3 (Complex IV). Therefore there is no need of this cytochromes in anaerobic respiration but that doesn’t necessarily mean the lack of this enzymes in all anaerobic bacteria.

What requirements must be met to culture an obligate anaerobic bacterium?

As an obligate anaerobe, cultures require hemin and vitamin K. Most species grow well in temperatures between 25 °C and 45 °C. For other cultural demands, refer to the genus Prevotella.

What is needed to start the whole process of cellular respiration?

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Which is the first step in anaerobic respiration?

That glycolysis is the first step of aerobic respiration and is the only energy-producing step in anaerobic respiration. That glycolysis breaks down glucose (6 carbons) into 2, 3-carbon pyruvate molecules, and that the energy “reward” for this is ATP and NADH.

Why are bacteria obligate to use anaerobic respiration?

This approach allows lets them get more ATP out of their glucose molecules when oxygen is around—since aerobic cellular respiration makes more ATP than anaerobic pathways—but to keep metabolizing and stay alive when oxygen is scarce. Other bacteria and archaea are obligate anaerobes, meaning they can live and grow only in the absence of oxygen.

What’s the difference between anaerobic respiration and glycolysis?

This is called anaerobic respiration, or respiration that does not require oxygen (“an-” as a prefix means “not”). But, glycolysis can’t just keep going on forever, because you’ll run out of the important, difficult-to-make-or-find molecule NAD⁺. NAD⁺ is the resource that gets turned into NADH.

Which is more efficient, aerobic or anaerobic respiration?

That aerobic respiration is the preferred way of making energy, when it is possible, because it is more efficient (you get more ATP per glucose—by a lot). That NAD⁺ must be recycled in anaerobic respiration, which happens through either alcoholic fermentation or lactic acid fermentation.

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