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The Carbon Cycle & Sulphur Cycle
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Question 1 |
Sulphates are reduced to hydrogen sulphide by .....
Desulfotomaculum sp. | |
Thiobacillus thiooxidans | |
Photosynthetic sulfur bacteria | |
Rhodospirillum |
Question 2 |
Fresh air contains approximately ..... percent carbon dioxide by volume.
0.01 | |
2 | |
5 | |
0.03 |
Question 3 |
Cellobiose is metabolized directly by many microorganisms.
True | |
False |
Question 4 |
Which among the following develop in the upper portion of the Winogradsky column?
Sulfate-reducing bacteria | |
Green-sulfur bacteria | |
Purple-sulfur bacteria | |
Thiobacilli |
Question 5 |
Purple and green sulfur bacteria use ..... as the electron donor to reduce carbon dioxide.
S2- | |
SO42- | |
H2S | |
Organic acids |
There are 5 questions to complete.