If volume of ${\mathrm{C}\mathrm{O}}_2$ liberated during respiration is more than the volume of ${\mathrm{O}}_2$ used, then the respiratory substrate will be

Study carefully the following statements and select the incorrect ones.

(i) When fats are used in respiration, the RQ is more than unity because fats contain more O₂ and require a relatively less amount of CO₂ for oxidation.
(ii) The most important energy carrier is ATP. This energy-rich compound is mobile and can pass from one cell to another.
(iii) Before pyruvic acid enters Kreb's cycle, one of the two carbon atoms of pyruvic acid is reduced to carbon dioxide in the reaction called reductive carboxylation.
(iv) A special electron carrier system located in the mitochondrial membrane is called a shuttle system. It transfers electrons from the hydrogen of cytoplasmic NADH to the mitochondrial electron carriers across the mitochondrial membrane.
(v) Zymase is a complex mixture of many enzymes that requires several coenzymes for its action. The enzyme complex-zymase catalyses series of reactions taking place during fermentation leading to the production of ethyl alcohol.

Select the incorrect statement with respect to the given representation.

Refer to the following flow chart representing cellular respiration and its fuels. Blanks 1, 2, 3, 4, 5, 6 and 7 are respectively.

Study the given figure and select the incorrect option regarding this.

Animal cells are suspended in a culture medium that contains excess glucose. The graph below shows glucose utilisation under different growth conditions. (A), (B), and (C) in the graph indicate