function of yeast and growth requirements.

Question 1

what type of raising agent it it?

Answer 1

biological.

Question 2

what does it do?

Answer 2

ferments to give off carbon dioxide.

Question 3

conditions: what temperature is needed for the yeast to ferment?

Answer 3

25-35c.

Question 4

conditions: what conditions are required for yeast to ferment?

Answer 4

warm temperatures, moisture, food and time.

Question 5

what will temperatures over 60c during baking do?

Answer 5

inactivate and finally destroy yeast cells.

Question 6

what is yeast a raising agent in?

Answer 6

bread, bread rolls, buns and rich pastries (Danish pastries.)

Question 7

what is yeast?

Answer 7

single-celled plants found in the air and on the skins of fruit.

Question 8

what can it survive without?

Answer 8

air.

Question 9

what conditions can’t it grow in?

Answer 9

low temperatures.
in vinegar.

Question 10

what can yeast be used to make?

Answer 10

bread, wine and brewing.

Question 11

what type of organism is it?

Answer 11

microorganism.

Question 12

what does it require to grow?

Answer 12

sugar.

Question 13

in bread making what will it do?

Answer 13

leaven the dough by producing carbon dioxide.
through fermentation and it’s enzymic action on other ingredients create a stretchy dough.
contribute to the flavour of the bread.