MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
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 |
| Answer» E. | |
| 2. |
The reduction of sulphates and sulphites to hydrogen sulphide is done by which group of bacteria? |
| A. | aerobic sulfate-reducing bacteria |
| B. | photosynthetic sulphur bacteria |
| C. | anaerobic sulphate-reducing bacteria |
| D. | heterotrophic bacteria |
| Answer» D. heterotrophic bacteria | |
| 3. |
The Winogradsky column experiment is done in the dark. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Sulphates are reduced to hydrogen sulphide by _____________________ |
| A. | Desulfotomaculum sp. |
| B. | Thiobacillus thiooxidans |
| C. | Photosynthetic sulfur bacteria |
| D. | Rhodospirillum |
| Answer» B. Thiobacillus thiooxidans | |
| 5. |
The amount of organic material in the forest soil remains approximately the same from year to year.
|
| A. | False |
| Answer» B. | |
| 6. |
Which among the following are the most important agents for carbon dioxide fixation? |
| A. | bacteria |
| B. | fungi |
| C. | algae |
| D. | protozoa |
| Answer» D. protozoa | |