Question

explain the ways in which glucose is broken down in absence of oxygen

Answer 1

hey friend,

first glucose is broken to pyruvic acid or pyruvate in cytoplasm in absence of air.

now two conditions where it is broken down to other substances in the absence of oxygen.

in muscle cells.
pyruvate-----> lactic acid + energy

where lactic acid is 3 carbon molecule

in yeast

pyruvate----> CH3CH2OH + CO2 + H2O + energy

where CH3CH2OH is ethanol {2 carbon molecule}

hope you like my answer :)

Answer 2

first glucose is broken to pyruvic acid or pyruvate in cytoplasm in absence of air.

now two conditions where it is broken down to other substances in the absence of oxygen.

in muscle cells.

pyruvate-----> lactic acid + energy

where lactic acid is 3 carbon molecule

in yeast

pyruvate----> CH3CH2OH + CO2 + H2O + energy

where CH3CH2OH is ethanol {2 carbon molecule}