The Carbon Cycle & Sulphur Cycle

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The Carbon Cycle & Sulphur Cycle

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Question 1 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Sulphates are reduced to hydrogen sulphide by .....
A
Desulfotomaculum sp.
B
Thiobacillus thiooxidans
C
Photosynthetic sulfur bacteria
D
Rhodospirillum
Question 2 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Fresh air contains approximately ..... percent carbon dioxide by volume.
A
0.01
B
2
C
5
D
0.03
Question 3 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Cellobiose is metabolized directly by many microorganisms.
A
True
B
False
Question 4 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Which among the following develop in the upper portion of the Winogradsky column?
A
Sulfate-reducing bacteria
B
Green-sulfur bacteria
C
Purple-sulfur bacteria
D
Thiobacilli
Question 5 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Purple and green sulfur bacteria use ..... as the electron donor to reduce carbon dioxide.
A
S2-
B
SO42-
C
H2S
D
Organic acids
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There are 5 questions to complete.

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