In the last practice of 1st ESO, in six tubes with some yeast in each one, we added:
a. Just the
yeast (one teaspoon)
b. A pinch (a little bit) of sugar.
c. 10 ml of cold
(tap) water.
d. A pinch
of sugar and 10 ml warm water (about 35ºC)
e. A pinch
of sugar and 10 ml boiling water.
f. A pinch
of sugar and 10 ml cold water.
Which
conditions do you think are the best?
Here are some results:
What are then your conclusions?
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