32 Questions
Which of the following microorganisms is classified as a prokaryote?
Archaea
What is the characteristic cellular composition of bacteria?
Unicellular with a nucleoid
Which discipline within microbiology focuses on the study of fungi?
Mycology
What is the cellular composition of protozoa?
Unicellular with a nucleoid
Which type of microorganism is known to be eukaryotic and multicellular?
Yeasts & other fungi
What is the main characteristic feature of viruses?
Not classified as organisms
What is the role of fimbriae and pili in bacteria?
To aid in interaction with surfaces and other bacteria
What is the main role of the peptidoglycan layer in the bacterial cell wall?
Provides rigidity and maintains shape
Which type of bacteria retains crystal violet in the Gram staining process?
Gram-positive bacteria
Which type of bacteria do not retain crystal violet in the Gram staining process?
Gram-negative bacteria
What characteristic formations can be exhibited by bacteria?
Clusters and chains
Which bacteria is responsible for causing diphtheria?
Corynebacterium diphtheriae
Which type of stain is used to identify Mycobacterium tuberculosis?
Acid-fast stain
What is the characteristic feature of obligate anaerobic bacteria?
They cannot survive in the presence of oxygen
What is the majority role of gut microbiota bacteria in humans?
Most are non-pathogenic and many provide a benefit by inhibiting pathogenic bacteria
What is one function of fimbriae and pili in bacteria?
To facilitate adherence to host tissues
What is a distinguishing characteristic of fungal cell walls?
Contain chitin
Which microbial group exhibits the most variability in size, ranging from microscopic to macroscopic?
Protists
Which type of microorganism predominantly reproduces through binary fission?
Bacteria
What distinguishes the cell wall composition of archaea from that of bacteria?
Unique compositions
Which microbial group can exhibit both prokaryotic and eukaryotic characteristics?
Protists
What is the typical size range for bacteria?
1-5 micrometers
Which type of microorganism is primarily responsible for nutrient cycling and can also be pathogens in some cases?
Bacteria
What is a characteristic feature of helminths?
Multicellular parasites
Which type of microorganism is commonly found as symbionts with plants and can be unicellular or multicellular?
Fungi
Where are archaea primarily found?
In environments with extreme temperature, salinity, or acidity
What is the characteristic cellular composition of fungi?
Eukaryotic cells with chitin in the cell walls
Which type of microorganism is primarily responsible for oxygen production and is part of the food chain in aquatic environments?
Algae
What is a common habitat for protozoa?
Found in water and as parasites in other organisms
What is a characteristic feature of bacteria's habitat?
Ubiquitous; found in various environments, including soil, water, and living organisms
What is the main role of helminths?
Parasitic helminths can cause diseases in humans and animals
What is a common habitat for fungi?
Ubiquitous; found in various environments, including soil, water, and living organisms
Test your knowledge of microbial organisms in healthcare science with this quiz. Learn about bacteria, fungi, protozoa, helminths, archaea, algae, and medically important viruses.
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