Which of the following processes is responsible for the release of oxygen?
I. Lactic acid fermentation
II. Alcohol fermentation
III. Aerobic respiration
IV. Photosynthesis

I and II

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I and III

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II only

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IV only

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III and IV

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Solution

The correct option is D IV only
Aerobic respiration is the breakdown of sugar/other food substances in the presence of oxygen to release energy. It includes glycolysis, Krebs cycle and electron transport chain. Glycolysis and Kreb cycle produce reducing compounds NADH, FADH $_{2}$ which are then oxidized in the presence of oxygen by the process of chemiosmosis and reduce oxygen to water. Fermentation is incomplete oxidation of food substances into alcohol and lactic acid with a small amount of energy being released. Both lactic acid and ethanol fermentation do not produce oxygen. Photosynthesis is the fixation of atmospheric carbon dioxide into organic compounds; use of water as the electron donor by photoautotrophs during photophosphorylation results in the production of oxygen.
Therefore, the correct answer is option D.

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Similar questions

Q. In which one of the following processes

C O_{2}

is not released?

Q. The common feature of aerobic respiration and alcoholic fermentation process is

Q. Read the following statements:

(i) The maximum concentration of alcohol in beverages that are naturally fermented is less than 3%
(ii) Yeasts poison themselves to death when the concentration of alcohol reaches about

13 %

.
(iii) In both lactic acid and alcoholic fermentation not much energy is released, less than

7 %

of the energy in glucose is released and not all of it is trapped as high energy bonds of ATP.
(iv) The ratio of ATP formed in aerobic and anaerobic respiration is

18 : 1

.
(v) During aerobic respiration, complete oxidation of respiratory substrate releases energy,

C O_{2}

but not water.

How many of the above statements are correct?

Q. Which of the following statement(s) is/are correct?
(i) Yeast can convert pyruvate into ethanol and carbon dioxide.
(ii) Fermentation takes place in aerobic bacteria only.
(iii) The site for fermentation is the mitochondria.
(iv) Fermentation is a form of anaerobic respiration. Choose the correct option.

Which of the following statements are correct ?
(i) pyruvate can be converted into ethanol and carbon dioxide by yeast
(ii) fermentation takes place in the case of aerobic bacteria
(iii) fermentation takes place in mitochondria
(iv) fermentation is a form of anaerobic respiration
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iii)

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Which of the following processes is responsible for the release of oxygen?I. Lactic acid fermentationII. Alcohol fermentationIII. Aerobic respirationIV. Photosynthesis

Which of the following processes is responsible for the release of oxygen?
I. Lactic acid fermentation
II. Alcohol fermentation
III. Aerobic respiration
IV. Photosynthesis