Given below are two statements: Assertion (A): C₆H₁₂O₆ + O₂ → 6CO₂ + 6H₂O + Energy (ATP + Heat) Reason (R): Glycolysis, which occurs in the cell’s cytoplasm, splits glucose into two three-carbon molecules and produces ATP, NADH, and water.

Correct option is A

The assertion represents the overall aerobic respiration reaction, where glucose is oxidized to release energy. This process results in the formation of ATP and heat, which are used for cellular activities. The reason correctly explains the initial stage of respiration, glycolysis, which contributes to ATP production. Thus, both the assertion and reason are true, and R correctly explains A.
Information booster: Cellular respiration occurs in multiple stages including glycolysis, Krebs cycle, and electron transport chain. Glycolysis takes place in the cytoplasm and does not require oxygen directly. ATP and NADH produced during respiration are energy-rich molecules. Respiration is essential for energy supply and metabolic functioning of living cells.
Why other options are incorrect: (b) This option is incorrect because the reason directly supports the assertion. (c) This option is incorrect because the reason statement is also true. (d) This option is incorrect because both statements are scientifically correct.