Micro-organisms: Basic structure and general characteristics

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Which group of micro-organisms can be autotrophic or heterotrophic?

Protists (correct)

Bacteria

Fungi

Viruses

What is primarily responsible for decomposing dead organic matter in ecosystems?

Algae

Bacteria (correct)

Protozoa

Viruses

Which micro-organisms are known for forming mutualistic relationships with plants and animals?

Fungi

Bacteria (correct)

Algae

Protozoa

What is the fundamental difference between the basic structures of Protists and Fungi?

Protists have chitin cell walls, while Fungi do not. Signup and view all the answers

Which group of micro-organisms are mostly responsible for fixing atmospheric nitrogen for plant use?

Bacteria Signup and view all the answers

What is a common method of reproduction in Protists?

Conjugation Signup and view all the answers

What distinguishes the nutritional mode of Protists from Fungi?

Protists are autotrophic, while Fungi are heterotrophic. Signup and view all the answers

Which form of movement is common among Protists?

Movement through cilia Signup and view all the answers

What role do bacteria and fungi play in ecosystems?

Decomposers aiding in nutrient cycling Signup and view all the answers

Which micro-organisms are essential components of the nitrogen cycle?

Bacteria Signup and view all the answers

What is the main difference in structure between viruses and bacteria?

Bacteria have a cell wall, plasma membrane, and nucleoid while viruses lack cellular organelles. Signup and view all the answers

Which characteristic is unique to viruses?

Exhibit characteristics of both living and non-living things. Signup and view all the answers

In terms of size, how do viruses compare to bacteria?

Viruses are typically between 20 – 300 nm while bacteria are larger and observable with light microscopes. Signup and view all the answers

Which of the following statements is true about virus reproduction?

Viruses rely entirely on host cells for reproduction. Signup and view all the answers

What is a fundamental difference in the nature of viruses and bacteria?

Viruses can become dormant outside host cells while bacteria cannot. Signup and view all the answers

Which of the following is NOT a characteristic shared by viruses and bacteria?

Reproduction primarily through binary fission. Signup and view all the answers

Which cellular feature is present in bacteria but absent in viruses?

Nucleoid where genetic material resides. Signup and view all the answers

What distinguishes the sizes of viruses and bacteria?

Bacteria are typically between 20 – 300 nm while viruses are larger. Signup and view all the answers

What type of organism is unable to perform metabolic processes independently?

Viruses Signup and view all the answers

Which type of microorganism exhibits characteristics of both living and non-living things?

Viruses Signup and view all the answers

What is the typical size range of viruses?

20 - 300 nm Signup and view all the answers

Which type of organism primarily reproduces through binary fission?

Bacteria Signup and view all the answers

Which type of organism possesses a protein coat called a capsid?

Viruses Signup and view all the answers

Which type of organism can become dormant outside host cells?

Viruses Signup and view all the answers

Which type of organism can be autotrophic or heterotrophic?

Bacteria Signup and view all the answers

Which type of organism is an obligate parasite requiring a host for replication?

Viruses Signup and view all the answers

Which type of organism typically possesses flagella for movement?

Bacteria Signup and view all the answers

Which type of organism is commonly responsible for causing diseases in various organisms including humans?

Viruses Signup and view all the answers

What is a distinguishing feature of Fungi's cell structure?

Complex cell structure with chitin Signup and view all the answers

Which group of micro-organisms can exhibit movement through cilia, flagella, or pseudopodia?

Protists Signup and view all the answers

What type of reproduction is common among Fungi?

Both sexual and asexual reproduction Signup and view all the answers

Which micro-organisms are producers in food chains by synthesizing their own food via photosynthesis?

Cyanobacteria and algae Signup and view all the answers

What is the primary nutritional mode of Fungi?

Heterotrophic Signup and view all the answers

Which micro-organisms play essential roles in decomposing dead organisms in ecosystems?

Bacteria and fungi Signup and view all the answers

In what way do bacteria contribute to the nitrogen cycle?

By fixing atmospheric nitrogen into usable forms Signup and view all the answers

Which group of micro-organisms forms mutualistic relationships with plants and animals?

Bacteria Signup and view all the answers

What distinguishes Protists from Fungi in terms of basic structure?

Being mostly unicellular Signup and view all the answers

What is a key difference between the nutritional modes of Protists and Fungi?

Ability of Protists for photosynthesis Signup and view all the answers

What distinguishes the reproductive capabilities of Protists from Fungi?

Protists reproduce sexually and asexually, while Fungi only reproduce asexually. Signup and view all the answers

Which group of micro-organisms plays a critical role in the nitrogen cycle by fixing atmospheric nitrogen into usable forms for plants?

Cyanobacteria Signup and view all the answers

In terms of habitat, where are most Protists found?

Mostly aquatic environments Signup and view all the answers

Which factor primarily differentiates the cell walls of Protists and Fungi?

Chitin composition Signup and view all the answers

What is a common method of movement among Protists?

Movement through flagella Signup and view all the answers

What primarily distinguishes the nutritional mode of Protists from Fungi?

Protists are autotrophic while Fungi are heterotrophic. Signup and view all the answers

Which ecological role is NOT typically associated with micro-organisms like bacteria and fungi?

Producers in food chains Signup and view all the answers

Which type of microorganism can exhibit movement through cilia, flagella, or pseudopodia?

Protists Signup and view all the answers

Which group of micro-organisms forms mutualistic relationships with plants and animals?

Bacteria Signup and view all the answers

Which type of organism can be autotrophic or heterotrophic?

Bacteria Signup and view all the answers

Which group of micro-organisms are mostly responsible for fixing atmospheric nitrogen for plant use?

Bacteria Signup and view all the answers

What is a fundamental difference in the nature of viruses and bacteria?

Viruses are obligate parasites requiring a host for replication Signup and view all the answers

Which form of movement is common among Protists?

Cilia, flagella, or pseudopodia Signup and view all the answers

What is primarily responsible for decomposing dead organic matter in ecosystems?

Fungi Signup and view all the answers

Which micro-organisms are known for forming mutualistic relationships with plants and animals?

Bacteria Signup and view all the answers

In what way do bacteria contribute to the nitrogen cycle?

By fixing atmospheric nitrogen for plant use Signup and view all the answers

Which characteristic is unique to viruses?

Exhibiting characteristics of both living and non-living things Signup and view all the answers

Which micro-organisms are capable of sexual reproduction and can exhibit movement through pseudopodia?

Protists Signup and view all the answers

Which group of micro-organisms is primarily responsible for breaking down dead organic matter through saprotrophic nutrition?

Fungi Signup and view all the answers

Which micro-organisms are typically involved in mutualistic relationships with plants, enhancing host nutrition and immunity?

Rhizobia Signup and view all the answers

Which micro-organisms play a crucial role in the nitrogen cycle by decomposing organic matter back into atmospheric nitrogen?

Denitrifying bacteria Signup and view all the answers

Which micro-organisms are unicellular, and their cell walls are composed of chitin?

Yeasts Signup and view all the answers

Which group of micro-organisms reproduces asexually through spores and sexually through gamete fusion?

Fungi Signup and view all the answers

Which micro-organisms are known to synthesize their own food through photosynthesis, forming the base of aquatic food chains?

Protists (e.g., algae) Signup and view all the answers

Which micro-organisms can be found in both freshwater and marine habitats and exhibit different nutritional modes?

Protists Signup and view all the answers

Which micro-organisms are capable of both sexual and asexual reproduction and can exhibit movement through cilia or flagella?

Protists Signup and view all the answers

Which group of micro-organisms forms mutualistic relationships with animals, enhancing host nutrition and overall health?

Gut microbiota Signup and view all the answers

What is the primary difference in the nature of viruses and bacteria?

Bacteria are unicellular prokaryotes, while viruses are acellular entities. Signup and view all the answers

Which of the following is NOT a characteristic shared by viruses and bacteria?

Reproduce through binary fission. Signup and view all the answers

What type of organism possesses a protein coat called a capsid?

Viruses Signup and view all the answers

Which ecological role is NOT typically associated with micro-organisms like bacteria and fungi?

Photosynthesis in green plants Signup and view all the answers

What type of organism is unable to perform metabolic processes independently?

Viruses Signup and view all the answers

What is the fundamental difference between the basic structures of Protists and Fungi?

Fungi have a cell wall made of cellulose, while Protists have a cell wall made of chitin. Signup and view all the answers

Which of the following statements is true about virus reproduction?

Viruses rely on host cells for reproduction. Signup and view all the answers

In terms of habitat, where are most Protists found?

In freshwater and marine environments Signup and view all the answers

Which type of organism can be autotrophic or heterotrophic?

Bacteria Signup and view all the answers

What is a primary difference between the nutritional modes of Protists and Fungi?

Protists are primarily autotrophic, while Fungi are primarily heterotrophic. Signup and view all the answers

Micro-organisms: Basic structure and general characteristics

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Questions and Answers

Which group of micro-organisms can be autotrophic or heterotrophic?

What is primarily responsible for decomposing dead organic matter in ecosystems?

Which micro-organisms are known for forming mutualistic relationships with plants and animals?

What is the fundamental difference between the basic structures of Protists and Fungi?

Which group of micro-organisms are mostly responsible for fixing atmospheric nitrogen for plant use?

What is a common method of reproduction in Protists?

What distinguishes the nutritional mode of Protists from Fungi?

Which form of movement is common among Protists?

What role do bacteria and fungi play in ecosystems?

Which micro-organisms are essential components of the nitrogen cycle?

What is the main difference in structure between viruses and bacteria?

Which characteristic is unique to viruses?

In terms of size, how do viruses compare to bacteria?

Which of the following statements is true about virus reproduction?

What is a fundamental difference in the nature of viruses and bacteria?

Which of the following is NOT a characteristic shared by viruses and bacteria?

Which cellular feature is present in bacteria but absent in viruses?

What distinguishes the sizes of viruses and bacteria?

What type of organism is unable to perform metabolic processes independently?

Which type of microorganism exhibits characteristics of both living and non-living things?

What is the typical size range of viruses?

Which type of organism primarily reproduces through binary fission?

Which type of organism possesses a protein coat called a capsid?

Which type of organism can become dormant outside host cells?

Which type of organism can be autotrophic or heterotrophic?

Which type of organism is an obligate parasite requiring a host for replication?

Which type of organism typically possesses flagella for movement?

Which type of organism is commonly responsible for causing diseases in various organisms including humans?

What is a distinguishing feature of Fungi's cell structure?

Which group of micro-organisms can exhibit movement through cilia, flagella, or pseudopodia?

What type of reproduction is common among Fungi?

Which micro-organisms are producers in food chains by synthesizing their own food via photosynthesis?

What is the primary nutritional mode of Fungi?

Which micro-organisms play essential roles in decomposing dead organisms in ecosystems?

In what way do bacteria contribute to the nitrogen cycle?

Which group of micro-organisms forms mutualistic relationships with plants and animals?

What distinguishes Protists from Fungi in terms of basic structure?

What is a key difference between the nutritional modes of Protists and Fungi?

What distinguishes the reproductive capabilities of Protists from Fungi?

Which group of micro-organisms plays a critical role in the nitrogen cycle by fixing atmospheric nitrogen into usable forms for plants?

In terms of habitat, where are most Protists found?

Which factor primarily differentiates the cell walls of Protists and Fungi?

What is a common method of movement among Protists?

What primarily distinguishes the nutritional mode of Protists from Fungi?

Which ecological role is NOT typically associated with micro-organisms like bacteria and fungi?

Which type of microorganism can exhibit movement through cilia, flagella, or pseudopodia?

Which group of micro-organisms forms mutualistic relationships with plants and animals?

Which type of organism can be autotrophic or heterotrophic?

Which group of micro-organisms are mostly responsible for fixing atmospheric nitrogen for plant use?

What is a fundamental difference in the nature of viruses and bacteria?

Which form of movement is common among Protists?

What is primarily responsible for decomposing dead organic matter in ecosystems?

Which micro-organisms are known for forming mutualistic relationships with plants and animals?

In what way do bacteria contribute to the nitrogen cycle?

Which characteristic is unique to viruses?

Which micro-organisms are capable of sexual reproduction and can exhibit movement through pseudopodia?

Which group of micro-organisms is primarily responsible for breaking down dead organic matter through saprotrophic nutrition?

Which micro-organisms are typically involved in mutualistic relationships with plants, enhancing host nutrition and immunity?

Which micro-organisms play a crucial role in the nitrogen cycle by decomposing organic matter back into atmospheric nitrogen?

Which micro-organisms are unicellular, and their cell walls are composed of chitin?

Which group of micro-organisms reproduces asexually through spores and sexually through gamete fusion?

Which micro-organisms are known to synthesize their own food through photosynthesis, forming the base of aquatic food chains?

Which micro-organisms can be found in both freshwater and marine habitats and exhibit different nutritional modes?

Which micro-organisms are capable of both sexual and asexual reproduction and can exhibit movement through cilia or flagella?

Which group of micro-organisms forms mutualistic relationships with animals, enhancing host nutrition and overall health?

What is the primary difference in the nature of viruses and bacteria?

Which of the following is NOT a characteristic shared by viruses and bacteria?

What type of organism possesses a protein coat called a capsid?

Which ecological role is NOT typically associated with micro-organisms like bacteria and fungi?

What type of organism is unable to perform metabolic processes independently?

What is the fundamental difference between the basic structures of Protists and Fungi?

Which of the following statements is true about virus reproduction?

In terms of habitat, where are most Protists found?

Which type of organism can be autotrophic or heterotrophic?

What is a primary difference between the nutritional modes of Protists and Fungi?

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