Match the types of bacteria listed in column I with their activity given in column II. Choose the correct combination of alphabets of the two columns.
| Column - I (Types of bacteria) | Column - II (Activity) |
|---|---|
| A Streptomyces | p Food poisoning |
| B Rhizobium | q Source of Antibiotics |
| C Nitrosomonas | r Nitrogen fixation |
| D Acetobacter | s Nitrification |
| t Vinegar synthesis |
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Due to discovery of which of the following in 1980, the evolution was termed as RNA world |
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One important characteristic of viruses is that they |
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Which type of DNA is found in bacteria? |
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The non-living characteristic of viruses is |
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Which of the following statements is not true for retroviruses? |
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Which of the following is a free living nitrogen fixing bacterium present in the soil? |
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Which statement is correct for bacterial transduction? |
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Cell wall of Gram positive bacteria is made up of |
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Which of the following statements is true about viruses? |
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Virus are living, because |
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