The little brown grains of dried yeast (from the packet) can and will grow if put into water (at room temperature) with a little bit of sugar dissolved in it. You will see them growing because the water will begin to produce a foam after 30 mins.
However, please note that if the dried yeast is kept too long before it is used, then the yeast in the brown grains may be killed. In this case no foam will be produced.
Sugar makes yeast grow fastest when added to it with warm water
The heat provides energy for the enzymes in the yeast to work. If the water is to hot however, the enzymes will be denatured, and the yeast will not grow.
Because yeast needs to have food just like us to grow, and sugar is that food.
warm water - yeast needs warm water to become active. suger is the yeast's food .it gives the yeast the energy it needs to grow. cold water - the cold water kills the yeast (kind of) normal room temperature - the yeast just becomes in active and doesn't react
Yeast Grows much better in sugar water. They are micro organisms that need the sucrose in the sugar to activate and grow, without the sugar very little would happen. If you used salt water it would most likely kill the yeast.
i think coke
To grow yeast effectively for baking, mix warm water, sugar, and yeast in a bowl. Let it sit for 5-10 minutes until it becomes frothy. This indicates that the yeast is active. Use this mixture in your baking recipe. Keep the yeast in a warm, draft-free place to help it grow.
Adding warm water will expand yeast cells rapidly
no
When yeast is in cold water, it goes dormant. If the water is too cold, though, it will kill the yeast.
Sugar is a necessary food source for yeast to grow and ferment. When yeast consumes sugar, it produces carbon dioxide and alcohol, which are responsible for fermentation in bread-making and alcohol production.
Yeast metabolism is the way yeast breathes or grow.