Nutrition
Yeast does different things based on temperature.
Yes.
Boiling will kill the yeast cell, thus the membrane wont function.
Yes, actually it does.
NO
yes, if your trying to make yeast rise try to leave it out on your counter at room temperature
Yeast need warm temperatures in order to grow. The perfect temperature for yeast is about 110 degrees F. Yeast will not start to reproduce and rise without warm temperatures to activate it.
Directly regulated by sugar and salt. Sugar cuases yeast growth, salt slows. Environmental factors such as moisture, heat and acidity also affect yeast growth.
Letting a water, sugar, and yeast mixture ferment for a long time does not affect the quantity of ethanol produced.
My guess would be that osmotic concentration of the sugar gets so great that the yeast is unable to get enough water for growth.
Active dry yeast and bread machine yeast are both types of yeast used in bread making, but they have some differences. Active dry yeast needs to be dissolved in water before use, while bread machine yeast can be mixed directly with dry ingredients. Active dry yeast typically requires longer rising times, while bread machine yeast is designed for quicker rising in bread machines. Using the wrong type of yeast can affect the rising and texture of the bread, so it's important to use the correct type specified in the recipe for best results.
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