What is the difference between alcoholic fermentation and lactic acid fermentation?

Differences

Lactic acid fermentation involved a   step  from Pyruvate  to Lactate in muscles and bacteria

Alcoholic fermentation  involved a  two way   step- pyruvate → ethanal  

and

Ethanal→ ethanol  in yeast cells

End products  

Lactic acid fermentation ; lactase  is the end product

Alcoholic fermentation- C02 and Alcohol:  Alcohol is give off

Enzymes

Lactate dehydrogenase and pyruvate decarboxylase are the  two enzymes for catalysis of  lactic acid fermentation reactions  

The two enzymes of  alcoholic fermentation are; Pyruvate decarboxylase and alcohol dehydrogenase,

Explanation:

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.