ICSE 9 Biology Economic Importance Test 5

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    Biology Practice: Economic Importance of Bacteria & Fungi (Mock Test 5 - Ultimate Mastery)

    1. Which of the following statements perfectly distinguishes between an "Antibiotic" and an "Antiseptic"?

    2. The preservation of milk through "Pasteurization" is effective because it targets:

    3. In the "Nitrogen Cycle", which organism is responsible for converting atmospheric $N_2$ into a form usable by plants without a symbiotic host?

    4. Why is Yeast preferred over other organisms in the brewing of beer and wine?

    5. "Retting" of linen fibers is technically a process of:

    6. A major economic loss in the agriculture of cereal crops like wheat is caused by "Rusts" and "Smuts". These are:

    7. "Vaccination" works on the principle of 'Memory'. What specifically is the body's response to a vaccine?

    8. Which of the following describes the role of "Decomposers" as a bridge between the living and the non-living?

    9. "Curdling" of milk is an example of protein denaturation caused by:

    10. "Cheese" ripening involves the use of specific fungi like Penicillium roqueforti. What is the goal?

    11. In a clinical emergency, a patient bitten by a venomous snake is given "Antivenom". This is an example of:

    12. Why is "Curing" of tobacco and tea leaves economically essential?

    13. The "Nitrogen Fixation" equation: $N_2 \rightarrow NH_3$ is primarily catalyzed by which enzyme in bacteria?

    14. What is the risk associated with the use of 'Aged' or 'Mouldy' hay as cattle feed?

    15. The "Serum" of an immune animal used for treatment differs from "Vaccine" because serum contains:

    16. "Mushroom cultivation" contributes to the economy by:

    17. Which of the following is a drawback of using "Antibiotics" indiscriminately?

    18. "Ammunification" is performed by ________ while "Denitrification" is performed by ________.

    19. Lactobacillus prevents the growth of putrefying bacteria in the gut because it:

    20. What is the fundamental goal of "Industrial Microbiology"?