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Practice each question, then open the answer or worked solution.
What is a broad-spectrum antibiotic? Name one such antibiotic.
Ans: Broad-spectrum antibiotics are a class of antibiotics that can be used for treating multiple bacterial infections. An example of such an antibiotic is Ampicillin.
What are viruses parasitizing bacteria called? Draw a well-labeled diagram of the same.
Ans: The viruses parasitizing are known as bacteriophages.
Which bacterium has been used as a clot-buster? What is its mode of action?
Ans: Bacterium Streptococcus produces an enzyme known as streptokinase is widely used as an anti-clotting agent. It can break down clots and prevent clot associated diseases like heart attacks.
What are biofertilizers? Give two examples.
Ans: Biofertilizers are used to enrich the soil by boosting the nutrient content, which aids in the general development and growth of the plants. Rhizobium and nostoc are examples of biofertilizers.