Environmental Microbiology MCQs with Answers

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Welcome to the Environmental Microbiology MCQs with Answers. In this post, we have shared Environmental Microbiology Online Test for different competitive exams. Find practice Environmental Microbiology Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Environmental Microbiology.

Environmental Microbiology Online Quiz

By presenting 3 options to choose from, Environmental Microbiology Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Environmental Microbiology Questions and Answers and click over the correct answer.

Test Name: Environmental Microbiology MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Environmental Microbiology

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1 / 40

What is the role of algae in aquatic ecosystems?

Decomposing organic matter

Producing oxygen

Fixing nitrogen

2 / 40

Which microorganism is commonly used in the production of biofuels?

Viruses

Algae

Fungi

3 / 40

Which microorganisms are commonly used as biological indicators of water quality?

Bacillus subtilis

Escherichia coli

Staphylococcus aureus

4 / 40

What type of microorganisms are primarily involved in the fermentation process?

Algae

Bacteria and yeast

Viruses

5 / 40

What is the term for microorganisms that can live in extreme environments?

Extremophiles

Psychrophiles

Mesophiles

6 / 40

Which type of microorganisms play a key role in the sulfur cycle?

Cyanobacteria

Methanogens

Sulfur-oxidizing bacteria

7 / 40

What is the main function of bacteria in the soil?

Producing oxygen

Decomposing organic matter

Fixing carbon dioxide

8 / 40

Which process converts nitrogen gas into ammonia?

Nitrogen fixation

Denitrification

Nitrification

9 / 40

Which type of microorganisms are used in the production of fermented foods?

Algae

Viruses

Bacteria and fungi

10 / 40

What is the main function of biofilms in natural environments?

Protecting microbial communities

Producing toxins

Fixing nitrogen

11 / 40

What is the role of methanogens in the carbon cycle?

Decomposing organic matter

Fixing nitrogen

Producing methane

12 / 40

Which microorganism is commonly used as an indicator of fecal contamination in water?

Escherichia coli

Bacillus subtilis

Staphylococcus aureus

13 / 40

Which microorganisms are used in the process of wastewater treatment?

Viruses

Bacteria and protozoa

Algae

14 / 40

What is the main function of lichens in the environment?

Decomposing organic matter

Indicating air quality

Fixing nitrogen

15 / 40

Which process describes the breakdown of organic matter by microorganisms?

Nitrogen fixation

Photosynthesis

Decomposition

16 / 40

What is the term for the microbial transformation of organic pollutants into less harmful substances?

Bioaccumulation

Biodegradation

Biomagnification

17 / 40

Which process involves the conversion of organic matter into humus?

Decomposition

Nitrification

Denitrification

18 / 40

Which microorganisms are primarily responsible for the production of antibiotics?

Viruses

Algae

Fungi and bacteria

19 / 40

What is the primary role of rhizobia in the environment?

Photosynthesis

Producing antibiotics

Nitrogen fixation

20 / 40

What is the role of microorganisms in the carbon cycle?

Decomposing organic matter

Producing methane

Fixing nitrogen

21 / 40

Which microorganisms are involved in the process of composting?

Bacteria and fungi

Protozoa

Viruses

22 / 40

Which process involves the conversion of ammonia to nitrate?

Nitrogen fixation

Denitrification

Nitrification

23 / 40

Which element is cycled through the environment by the process of photosynthesis and respiration?

Sulfur

Nitrogen

Carbon

24 / 40

Which type of microorganism is involved in the process of bioremediation?

Bacteria

Viruses

Algae

25 / 40

Which type of microorganism is most commonly associated with the nitrogen cycle?

Bacteria

Viruses

Fungi

26 / 40

What is the term for the microbial degradation of organic pollutants?

Bioaugmentation

Phytoremediation

Bioremediation

27 / 40

What is the term for microorganisms that require high salt concentrations to grow?

Thermophiles

Halophiles

Psychrophiles

28 / 40

What is the role of decomposers in the environment?

Producing oxygen

Fixing nitrogen

Breaking down organic matter

29 / 40

What is the primary role of microorganisms in the water cycle?

Fixing nitrogen

Purifying water

Producing oxygen

30 / 40

Which gas is produced by anaerobic decomposition in landfills?

Nitrogen

Methane

Oxygen

31 / 40

What is the role of denitrifying bacteria in the nitrogen cycle?

Converting nitrate to nitrogen gas

Producing ammonia

Fixing nitrogen

32 / 40

What is the term for the study of microorganisms in their natural environments?

Medical microbiology

Industrial microbiology

Environmental microbiology

33 / 40

What is the primary role of mycorrhizal fungi in the soil?

Fixing nitrogen

Producing antibiotics

Enhancing nutrient uptake

34 / 40

Which gas is a major greenhouse gas produced by microbial activity?

Nitrogen

Methane

Oxygen

35 / 40

What is the primary role of protozoa in aquatic ecosystems?

Fixing nitrogen

Producing oxygen

Controlling bacterial populations

36 / 40

What is the term for the symbiotic relationship between plant roots and fungi?

Rhizobia

Mycorrhizae

Lichens

37 / 40

Which microorganisms are primarily responsible for the process of nitrification?

Methanogens

Sulfur-oxidizing bacteria

Nitrifying bacteria

38 / 40

Which process describes the conversion of nitrate to nitrogen gas?

Nitrogen fixation

Denitrification

Nitrification

39 / 40

What is the role of microbes in the phosphorus cycle?

Fixing nitrogen

Producing oxygen

Mineralizing organic phosphorus

40 / 40

What is the role of cyanobacteria in aquatic ecosystems?

Decomposition

Photosynthesis

Nitrogen fixation

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admin4 weeks ago

0 3 1 minute read