NTA Abhyas NEET2020BotanyRespiration in PlantsPractice
In cellular respiration, from 180g of glucose which of the following is formed?
Options
- A264g CO 2 + 190g H 2 O + 686 Kcal
- B264g CO 2 + 108g H 2 O + 686 Kcal
- C390g CO 2 + 108g H 2 O + 391 Kcal
- D390g CO 2 + 264g H 2 O + 391 Kcal
Correct answer
B. 264g CO 2 + 108g H 2 O + 686 Kcal
Step-by-step solution
In respiration, from 180 gm of glucose 264 gm Co 2 + 108 gm H 2 O + 686 Kcal energy is formed. C 6 H 1 2 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O + 6 8 6 Kcal Atomic weight of C = 12, H = 1, O = 16 C 6 H 12 O 6 = 1 3 × 6 + 1 2 × 1 + 1 6 × 6 = 180 gm 6CO 2 = 6 (12 + 16 x 2) = 264 gm 6H 2 O = 6 (2 x 1 + 16) = 108 gm ∴ From 1 molecule or 180 gm of glucose, through respiration, 264 gm CO 2 , 108 gm H 2 O and 686 Kcal energy are formed.