In which one of the following processes CO2 is not released?

Question

Inorganic phosphate is involved in which step of respiration?

Answer 1

The question asks which of the following processes does not release carbon dioxide (CO₂). To answer this, let's review each process:

Aerobic respiration in plants: Plants respire to release energy, and in the aerobic respiration process, CO₂ is released as a byproduct.
Aerobic respiration in animals: Similarly to plants, animals perform aerobic respiration. Oxygen is used to generate energy, and carbon dioxide is produced as a waste product.
Alcoholic fermentation: This process occurs in the absence of oxygen, primarily in yeast cells, producing ethanol and carbon dioxide as byproducts.
Lactate fermentation: This process occurs in some microorganisms and animal muscle cells when oxygen is scarce. It converts glucose into lactic acid without releasing CO₂.

Thus, the correct answer is lactate fermentation (option 4), as it does not release carbon dioxide.

Answer 2

The question asks which of the following processes does not release carbon dioxide (CO₂). To answer this, let's review each process:

Aerobic respiration in plants: Plants respire to release energy, and in the aerobic respiration process, CO₂ is released as a byproduct.
Aerobic respiration in animals: Similarly to plants, animals perform aerobic respiration. Oxygen is used to generate energy, and carbon dioxide is produced as a waste product.
Alcoholic fermentation: This process occurs in the absence of oxygen, primarily in yeast cells, producing ethanol and carbon dioxide as byproducts.
Lactate fermentation: This process occurs in some microorganisms and animal muscle cells when oxygen is scarce. It converts glucose into lactic acid without releasing CO₂.

Thus, the correct answer is lactate fermentation (option 4), as it does not release carbon dioxide.

The Correct Option is D