Prokaryotic and Eukaryotic Pathogens

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Questions and Answers

Which of the following statements best describes the classification of fungi?

Fungal classification depends on their habitats, type of mycelia, and modes of growth. (correct)

The classification of fungi is primarily concerned with their reproductive structures.

All fungi are classified as either yeasts or bacteria.

Fungi are classified solely based on their modes of reproduction.

What is a common mode of reproduction in fungi?

Both binary fission and budding. (correct)

Only budding.

Binary fission only.

Reproduction occurs exclusively through spores.

Which statement highlights the importance of fungi in ecosystems?

Fungi exclusively decompose animal matter.

Fungi only grow in aquatic environments.

Fungi contribute to soil health and nutrient cycling. (correct)

Fungi are primary producers in food chains.

Which of the following is an example of a pathogenic fungus?

All of the above are pathogenic fungi. Signup and view all the answers

Which technique is most commonly employed to identify fungal species?

DNA sequencing. Signup and view all the answers

What is the primary classification level used in binomial nomenclature for organisms?

Genus Signup and view all the answers

Which of the following protozoa is known to cause Leishmaniasis?

Leishmania amazonensis Signup and view all the answers

Which of the following is NOT a common method of reproduction in protozoa?

Fertilization Signup and view all the answers

What role do protozoa play in ecosystems?

They act as decomposers. Signup and view all the answers

Which of the following techniques is commonly used for the identification of protozoa?

DNA sequencing Signup and view all the answers

Which protozoan disease is often referred to as 'sleeping sickness'?

Trypanosomiasis Signup and view all the answers

In which taxonomic domain do protozoa fall?

Eukaryota Signup and view all the answers

What is a common method of reproduction for protozoa?

Binary fission Signup and view all the answers

Which of the following is NOT classified as a protozoa?

Streptococcus pneumoniae Signup and view all the answers

How do protists generally ingest food?

Cytostome ingestion Signup and view all the answers

Which of the following protozoa stages is known to be the feeding and multiplying phase?

Trophozoite stage Signup and view all the answers

What is the primary role of protozoa in ecosystems?

Decomposers of organic material Signup and view all the answers

Which protozoan is primarily associated with causing malaria?

Plasmodium falciparum Signup and view all the answers

Which type of protozoa generally move using cilia?

Ciliates Signup and view all the answers

Identify a characteristic feature of the cyst stage in protozoa.

Thickened cell wall Signup and view all the answers

What is the primary mode of locomotion for flagellated protozoa?

Flagellar movement Signup and view all the answers

Which of the following protozoa is known for being intracellular pathogens?

Trypanosoma brucei Signup and view all the answers

Study Notes

Protozoa - Key Notions

Protozoa are unicellular eukaryotes
Found in almost every habitat
Can ingest complex food particles through the cytostome (mainly flagellates)
Can be extracellular (blood, mucosa) or intracellular (cell ingestion)
Protozoa can ingest nutrients directly through either cytoplasm or direct nutrient uptake
Protozoa can move by pseudopodia, appear flagellated, or ciliated
Most protozoa reproduce asexually by binary division, but some reproduce sexually
Protozoa examples include: Entamoeba gingivalis, Acanthamoeba, Leishmania mexicana, Trichomonas vaginalis, Giardia lamblia, Balantidium coli, Plasmodium falciparum, Toxoplasma gondii, and Cryptosporidium
Protozoa can exist in different stages of growth: cyst, trophozoite, and flagellated stages

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Description

This quiz covers essential concepts about protozoa, unicellular eukaryotes that inhabit diverse environments. Explore their feeding mechanisms, modes of movement, reproduction methods, and examples of various protozoan species. Test your knowledge on their life stages and ecological significance.