Question

activity plus in science book . in that book ,experiment- to study the fermentation of sugar by yeast

Answer 1

as you say activity plus in Science book in that book experiment to study the fermentation of sugar by is there is nothing about sugar here I get an experiment to observe the permanent slides of budding in yeast dividing bacterium and fragmentation in Spirogyra
material required -permanent slides of budding in yeast dividing bacterium and fragmentation in spirogyra compound microscope pencil and notebook
procedure-visit the Biology Laboratory select the permanent slides of budding in yeast dividing bacterium and fragmentation in spirogyra put on the stage of the compound microscope and adjustment knobs of the microscope to get a Clear View of the specimens.
observation-draw neat and well labelled diagram of this light that you saw

Answer 2

Aim:

Aim: To study fermentation of sugar into alcohol by the action of yeast.

Materials required:

sugar, cups, lukewarm water, yeast

Procedure:

Take lukewarm water in a cup and add 3-4 teaspoons of sugar to it. Stir it well. Now, add half teaspoon of yeast to this solution. Cover the cup and keep it undisturbed for about 5-6 hours. After the said time, open the lid. You will smell alcohol. The yeast, that we added, fermented the sugar in the cup and converted into alcohol.