TRIPLE SCIENCE: Biofuels

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Is fermentation aerobic or anaerobic respiration?
Anaerobic respiration.
1 of 9
What does fermentation by yeast produce?
Ethanol.
2 of 9
Ethanol is made by fermenting what?
Sugar, e.g. glucose.
3 of 9
Name the main two components of biogas.
Methane and carbon dioxide.
4 of 9
Name materials that might be used as food for the microorganisms used in producing biogas.
Human sewage, Animal dung, kitchen waste, sludge waste from factories.
5 of 9
Suggest three variables, other than temperature, that might affect the rate of bio production.
1. Amount of waste. 2. Amount of bacteria. 3. pH.
6 of 9
Describe three possible advantages for villages having a biogas generator.
1. Cheaper fuel costs. 2. Disposes of waste. 3. Less disease and pollution.
7 of 9
Does biogas produce significant amounts of sulphur dioxide or nitrous oxides?
No - so it doesn't cause acid rain.
8 of 9
Name the fungus that is used to produce mycoprotein.
Fusarium.
9 of 9

Other cards in this set

Card 2

Front

What does fermentation by yeast produce?

Back

Ethanol.

Card 3

Front

Ethanol is made by fermenting what?

Back

Preview of the front of card 3

Card 4

Front

Name the main two components of biogas.

Back

Preview of the front of card 4

Card 5

Front

Name materials that might be used as food for the microorganisms used in producing biogas.

Back

Preview of the front of card 5
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