Question

how does a small amount of yeast added help to produce thousands of litres of alcohol

Answer 1

As you know yeast is a unicellular fungi.And yeast divide by binary fission(simple divison of cell in two part and both part survive and again divide into two .)

So; by binary divison small amount of yeast produce thousands of litre alcohol.

Because it take only 90 minute to divide .

So by binary divison there is lot of cell of yeast to make alcohol.