Is Yeast Alive?

OBSERVATION:

    YEAST GROWTH TEST# 2

QUESTION:

    IS YEAST ALIVE?

MATERIALS:

    2 glass measuring cups, 1-cup capacity each
    teaspoon
    granulated sugar
    warm water (110 to 115°F)
    1 package of Active Dry Yeast (1/4 ounce)

PROCEDURE:

    1. Make a yeast solution using 1/2 cup warm water (110 to 115°F), 1 teaspoon sugar and 1/4 ounce package of Active Dry Yeast.

    2. Each day, transfer 1 teaspoon of original yeast solution to a solution of 1/2 cup warm water (110 to 115°F) and 1 teaspoon sugar.

    3. Make another sugar solution and add 1 teaspoon water daily.

    4. Keep a record of your progress for five (5) days.

CONCLUSION:

    1. What do you observe happening to each of your containers?

    2. Does the yeast culture continue to multiply even though it becomes diluted by the daily transfer?