Microorganisms Practice Worksheet PDF

Practice-Worksheet 1. Answer in one word 1. Which microorganism is used in the production of cheese? 2. Which of the following diseases is caused by a protozoan? 3. Which microorganism is responsible for the fermentation process? 4. Name the microorganism...

Practice-Worksheet 1. Answer in one word 1. Which microorganism is used in the production of cheese? 2. Which of the following diseases is caused by a protozoan? 3. Which microorganism is responsible for the fermentation process? 4. Name the microorganism used in the production of bread. 5. What is the term for a disease-causing microorganism? 6. Which microorganisms are known for nitrogen fixation in soil? 7. What is the name of the process by which microorganisms convert sugars into alcohol? 8. Which microorganisms are responsible for making curd from milk? 9. Name the pigment used by photosynthetic microorganisms to capture light energy. 10.What do you call microorganisms that decompose organic matter? 11.Which type of microorganism causes malaria? 12.What is the protective protein coat surrounding the genetic material of a virus called? 13.What is the process of heating milk to kill harmful bacteria called? 14.What is the name of the fungi used to make bread and beer? 15.What is the scientific term for the microorganisms that live in symbiosis with plant roots to fix nitrogen? 2. Short Answer Questions 1. Define microorganisms and give examples of four different types. 2. Explain the role of microorganisms in the nitrogen cycle. 3. What is fermentation, and how do microorganisms contribute to this process? 4. Describe two beneficial uses of bacteria in industries. 5. What are antibiotics, and how do they work? Provide an example. 3. Long Answer Questions 1. Explain the various roles of microorganisms in the environment, including their importance in decomposition, nitrogen fixation, and food production. 2. Discuss the harmful effects of microorganisms on humans, animals, and plants. Include examples of diseases caused by bacteria, viruses, fungi, and protozoa. 3. How do microorganisms contribute to the food industry? Provide detailed examples, including the production of dairy products, alcoholic beverages, and bread. 4. Describe the process of nitrogen fixation. Which microorganisms are involved, and why is it important for agriculture? 5. Compare and contrast bacteria and viruses in terms of structure, reproduction, and their roles in causing diseases. 6. Diagram-Based Questions 1. Draw a labeled diagram of a bacterial cell and describe its main components. 2. Draw and explain the nitrogen cycle, highlighting the role of microorganisms in each step. 7. Assertion and Reason Questions a) Both A and R are true, and R is the correct explanation of A. b) Both A and R are true, but R is not the correct explanation of A. c) A is true, but R is false. d) A is false, but R is true. e) A and R both are false 1. Assertion (A): Antibiotics are effective against bacterial infections. Reason (R): Antibiotics destroy the cell walls of bacteria, preventing their growth. 2. Assertion (A): Viruses can reproduce outside a host cell. Reason (R): Viruses have their own machinery to replicate independently. 3. Assertion (A): Viruses are considered non-living when they are outside a host cell. Reason (R): Viruses do not have a cellular structure and cannot carry out metabolic activities on their own. 4. Assertion (A): Antibiotics are ineffective against viral infections. Reason (R): Viruses do not have cell walls that can be targeted by antibiotics. 5. Assertion (A): Algae are considered primary producers in aquatic ecosystems. Reason (R): Algae can perform photosynthesis to produce their own food.