Fermenters

Question 1

Describe an experiment for the carbon dioxide production in yeast?

Answer 1

1) Mix sugar, yeast and water in a test tube
2) Attach a bung to a test tube which leads to a 2nd test tube with water
3) Put the test tube with yeast in a water bath
4) Leave it and count the bubbles

Question 2

How could you change the experiment for carbon dioxide production in yeast?

Answer 2

1) Measure the volume of gas

2) Vary the sugar concentration

Question 3

What can the things in fermenters do?

Answer 3

Nutrients are used for respiration
Optimum temperature and ph is maintained using probes
Oxygen is needed for aerobic respiration
Stirring keeps the nutrients, temperature and micro organisms evenly distributed