Biotechnology

Alert Level Lockdown 3/4 Online Learning Programme

Fermentation (Experiment)

 

Learning Intention 

I am learning…  that fermentation is the process in which a substance breaks down into a simpler substance. Microorganisms like yeast and bacteria usually play a role in the fermentation process, creating chocolate, wine, bread, kimchi, yogurt and other foods.

 

Activity

Instructions:  Collect the following ingredients:

●         Yeast 1 tsp (You’ll find this in the kitchen)

●         1 Small cup of lukewarm water. 100ml

●         A small amount of cereal. (Half a Weetbix)

Directions:

●         Mix all ingredients in a small snack sized Ziplock bag or any small plastic bag.

●         Remove all the air before you seal the bag.

●         Mix well and let stand.

●         Make two drawings of your plastic bag:

            A) at the start of the experiment and B) twenty minutes after.

 

Discussion Questions:

1.        What do you see after a while?

 

2.        What process is taking place in the plastic bag?

 

3.        What gas is being produced in the plastic bag?

 

4.        Name a real-life activity that uses a process similar to your experiment.

 

5.        What kingdom is yeast in?

 

6.        Write the definition for Fermentation.

 

7.        What does it mean that fermentation is anaerobic?

 

 

 

Extension:

           

Use Google to answer these questions.

 

1.        How is blue cheese fermented?

 

2.        Make a drawing that properly shows how yogurt is made. Your drawing should clearly show each stage in the process and should act as a teaching tool other students could use to better understand the process.

 

 

Links:

https://www.youtube.com/watch?v=MPToC2_tjxo

https://www.youtube.com/watch?v=eksagPy5tmQ&t=95s

 

Vocabulary:

●         Bacteria  (huakita)

●         Yeast (īhi)

●         Lactic Acid (waikawa waiū)

●         Lactose (reihuka)

●         Immune system (pūnaha awhikiri)

 

Please email neal@wistecom.school.nz if you have any questions.

Have fun!

 

Mr. Strydom




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