MCQOPTIONS
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MCQOPTIONS
This section includes 27 Mcqs, each offering curated multiple-choice questions to sharpen your Micro Organisms knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Examples of Multicellular Microorganism are |
| A. | Algae, Bacteria |
| B. | Bacteria and Fungi |
| C. | Bacteria and Viruses |
| D. | Algae and Fungi |
| Answer» E. | |
| 2. |
Tooth decay is caused by sugars. What feeds on sugars in the mouth to cause tooth decay? |
| A. | Virus |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 3. |
Diseases like polio and chicken pox are caused by _______ |
| A. | Bacteria |
| B. | Fungi |
| C. | Virus |
| D. | Worms |
| Answer» D. Worms | |
| 4. |
Viruses are not considered living because they do not have all of the seven characteristics of living things. Which one of these characteristics do viruses have? |
| A. | Growth |
| B. | Movement |
| C. | Nutrition |
| D. | Reproduction |
| Answer» E. | |
| 5. |
Athletes foot is an example of |
| A. | fungus |
| B. | virus |
| C. | bacteria |
| D. | chromosome |
| Answer» B. virus | |
| 6. |
Which one of the microorganisms below reproduces inside living cells and eventually kills the cell? |
| A. | Virus |
| B. | Bacteria |
| C. | Penicillin |
| D. | Fungus |
| Answer» B. Bacteria | |
| 7. |
Chemicals produced by bacteria and fungi, and which treat infections caused by bacteria, are known as |
| A. | fungi |
| B. | antibiotics |
| C. | micro-organisms |
| D. | viruses |
| Answer» C. micro-organisms | |
| 8. |
Fungi are simple plants. Which one of the following statements about fungi is INCORRECT? |
| A. | Fungi contain chlorophyll. |
| B. | Fungi can act as parasites. |
| C. | Fungi cannot make their own food. |
| D. | Fungi can act as decomposers. |
| Answer» B. Fungi can act as parasites. | |
| 9. |
The type of microorganism used to make yoghurt is |
| A. | bacteria |
| B. | virus |
| C. | ringworm |
| D. | fungus |
| Answer» B. virus | |
| 10. |
Which one of the following is not a fungus? |
| A. | Bread mould |
| B. | Potato blight |
| C. | Chickenpox |
| D. | Mushroom |
| Answer» D. Mushroom | |
| 11. |
Which one of the following is not a beneficial effect of fungi? |
| A. | They are used in making antibiotics. |
| B. | They can act as decomposers. |
| C. | They are used to make yoghurt. |
| D. | They are used in the manufacture of cheese. |
| Answer» D. They are used in the manufacture of cheese. | |
| 12. |
Which one of the following microorganisms consists of only one cell? |
| A. | Fungus |
| B. | Bacteria |
| C. | Bread mould |
| D. | Virus |
| Answer» C. Bread mould | |
| 13. |
Tetanus, pneumonia and tooth decay are examples of |
| A. | harmful fungi |
| B. | antibiotics |
| C. | bacterial diseases |
| D. | viral diseases |
| Answer» D. viral diseases | |
| 14. |
Dead plants and animals in the soil are broken down into humus by the efforts of |
| A. | bacteria and fungi in the soil. |
| B. | Viruses in the soil. |
| C. | bacteria only in the soil. |
| D. | Fungi and viruses in the soil. |
| Answer» B. Viruses in the soil. | |
| 15. |
The largest type of microorganism is the |
| A. | antibiotic |
| B. | bacteria |
| C. | virus |
| D. | fungus |
| Answer» E. | |
| 16. |
Which one of the following microorganisms is not a virus? |
| A. | Ebola |
| B. | Rhinovirus |
| C. | Salmonella |
| D. | Influenza |
| Answer» D. Influenza | |
| 17. |
Which one of the following acts as a decomposer? |
| A. | Bacteria |
| B. | Virus |
| C. | Bread mould |
| D. | Fungus |
| Answer» B. Virus | |
| 18. |
Milk, if left out of the refrigerator will quickly go sour. Which one of the following statements is incorrect? |
| A. | The higher the temperature, the faster the milk will go sour. |
| B. | Bacterial action causes the milk to go sour. |
| C. | Viruses cause milk to go sour faster. |
| D. | As milk goes sour, it becomes more acidic. |
| Answer» D. As milk goes sour, it becomes more acidic. | |
| 19. |
Which one of the following statements is incorrect? |
| A. | Meningitis and appendicitis are caused by human bacteria. |
| B. | Bacteria cannot respire. |
| C. | Cheese can be made using bacteria. |
| D. | Bacteria in soil causes dead plants and animals to decompose. |
| Answer» C. Cheese can be made using bacteria. | |
| 20. |
Which one of the following species is the smallest? |
| A. | Bacteria |
| B. | Virus |
| C. | Fungi |
| Answer» C. Fungi | |
| 21. |
The process by which amount of nitrogen remains the same in the atmosphere is known as |
| A. | fermentation |
| B. | carbon cycle |
| C. | nitrogen cycle |
| D. | photosynthesis |
| Answer» D. photosynthesis | |
| 22. |
Watering the crops is called: |
| A. | sowing |
| B. | manuring |
| C. | tilling |
| D. | irrigation |
| Answer» C. tilling | |
| 23. |
Which of the following is not used as food preservatives? |
| A. | Salt |
| B. | Sugar |
| C. | Vinegar |
| D. | Methane |
| Answer» E. | |
| 24. |
Which microorganism causes AIDS? |
| A. | A protozoa |
| B. | A bacteria |
| C. | A virus |
| D. | An algae |
| Answer» D. An algae | |
| 25. |
Which of the following disease is spread due to bacteria? |
| A. | Tuberculosis |
| B. | Measles |
| C. | Chicken pox |
| D. | Polio |
| Answer» B. Measles | |
| 26. |
Which bacteria helps in settling of curd? |
| A. | Rhizobium |
| B. | Lactobacillus |
| C. | Vibriocholarae |
| D. | Bacillus |
| Answer» C. Vibriocholarae | |
| 27. |
The disease caused by fungi is |
| A. | measles |
| B. | chicken pox |
| C. | polio |
| D. | ringworm |
| Answer» E. | |