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Fermentation Lab - PowerPoint PPT Presentation


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Fermentation Lab. Hypothesis: Which test tube will pop first? Purpose: To identify a common type of anaerobic respiration. Anaerobic Respiration. Both test tubes contain yeast Test tube ‘A’ has grape juice in it.(sugar source) Test Tube ‘B’ has water in it.

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Hypothesis: Which test tube will pop first?Purpose: To identify a common type of anaerobic respiration.
anaerobic respiration
Anaerobic Respiration

Both test tubes contain yeast

Test tube ‘A’ has grape juice in it.(sugar source)

Test Tube ‘B’ has water in it.

Both Test tubes are corked and you wait 45 minutes.

Grape Juice

Water

Yeast in both

predict what will happen
Predict what will happen?

What will happen?

observation and data
Observation and Data:
  • You noticed:
  • Bubbles produced.
  • A noticeable odor.
  • Test Tube ‘A’ popped.

Grape Juice

Water

Yeast in both

questions why
Questions: Why?
  • What anaerobic reaction took place?
  • Draw the reaction.
  • Why is this reaction anaerobic?
  • What were the bubbles?
  • Why didn’t the reaction take place in both test tubes?
  • (All answers must be in complete sentences…)