CBSE Class 10 Science 2019 Delhi Set 1

Question : 4 of 28

Marks: +1, -0

Write two different ways in which glucose is oxidized to provide energy in human body. Write the products formed in each case.

Solution:

Glucose is oxidised in two forms to provide energy to the body:

(i)

{\C}_6 {\H}_{12} {\O}_6{──────▶}↖{\In}↙{\text "cytoplasm"}\Pyruvate{──────▶}↖{Presence}↙{\text "of Oxygen"}\CO_2+\H_2O+{38\ATP}↙{\text "energy"}

This is an example of Aerobic Respiration that happens in presence of oxygen.

(ii)

{{\C}_6 {\H}_{12}}↙{\text "Glucose"} {\O}_6 \;{ {──────▶}↖{\;\text " In "\;}↙{\;\text " cytoplasm "\;}}\Pyruvate{──────▶}↖{\Absemce}↙{\text "of oxygen"}{\C_2\H_5\OH}↙{\Ethanol}+\CO_2+{2\ATP}↙{\text "energy"}

This is an example of Anaerobic Respiration.

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