Production of ethanol by fermentation (anaerobic respiration) (LC 2026) (Leaving Cert Biology): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What type of respiration produces ethanol with yeast?
What type of respiration produces ethanol with yeast?
Anaerobic respiration
What are the two products of fermentation with yeast?
What are the two products of fermentation with yeast?
Ethanol and carbon dioxide
What do animals produce under anaerobic conditions?
What do animals produce under anaerobic conditions?
Lactic acid
What is another name for anaerobic respiration?
What is another name for anaerobic respiration?
Fermentation
Why is water boiled before adding to the glucose solution?
Why is water boiled before adding to the glucose solution?
To remove oxygen
What is the purpose of the oil layer on the solution?
What is the purpose of the oil layer on the solution?
To keep oxygen out
What is the optimal temperature for yeast enzymes?
What is the optimal temperature for yeast enzymes?
30°C
How much glucose is added to the solution?
How much glucose is added to the solution?
7g
What colour change confirms carbon dioxide production?
What colour change confirms carbon dioxide production?
Colourless to milky
Which reagents are used in the iodoform test for ethanol?
Which reagents are used in the iodoform test for ethanol?
Potassium iodide & sodium hypochlorite
What colour change indicates a positive ethanol test?
What colour change indicates a positive ethanol test?
Colourless to yellow
At what temperature and for how long is the iodoform test conducted?
At what temperature and for how long is the iodoform test conducted?
35°C for 15 minutes
What is used in the control setup to validate the experiment?
What is used in the control setup to validate the experiment?
No yeast