Question

Which of the following are the end products of the complete combustion of glucose?

(a) CO2 and starch

(b) Fructose and lactose

(c) H2O and mannose

(d) CO2 and H2O

This question was addressed to me by my college director while I was bunking the class.

My query is from Plants Respiration topic in division Respiration in Plants of Biology – Class 11

Answer 1

Correct choice is (d) CO2 and H2O

Explanation: The complete combustion of glucose, which produces CO2 and H2O as end products, yields energy most of which is given out as heat. If this energy is to be useful to the cell, it should be able to utilise it to synthesise other molecules that the cell requires.