Fermentation / Biotechnology

Question 1

Biotechnology def

Answer 1

The use of biological process is or organisms to create useful products

Question 2

Fermentation definition

Answer 2

A type of anaerobic respiration in which glucose is converted into ethanol carbon dioxide and energy

Question 3

Fermentation word equation

Answer 3

glucose —> ethanol +carbon dioxide (+energy)

Question 4

What is yeast

Answer 4

A microorganism

Question 5

What can yeast be used in

Answer 5

Bread and many alcoholic drinks

Question 6

What role do enzymes have in fermentation

Answer 6

They speed up fermentation making reaction occur faster and they work best in a warm environment

Question 7

How do you make bread

Answer 7

Flour water and yeast are mixed
the dough is then left in a warm place
the yeast respires changing the sugars in flour into ethanol and carbon dioxide
the carbon dioxide is trapped as bubbles which makes it rise
Then baked the ethanol evaporates the bubbles of gas expand making it rise further

Question 8

Explain how to make beer and wine

Answer 8

1. the plant sugar is added to a large container which is then crushed
2. yeast is added to ferment sugar the container is sealed to keep out oxygen and other microorganisms
3. the mixture is left until the sugar has fermented into alcohol
4. sediment is removed in the liquid by firming filtration the liquid is bottled and ready