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WorksheetsMicroorganisms Quiz
Total questions: 50
Worksheet time: 25hrs 0mins
Which organisms lack a membrane-bound nucleus?
Fungi
Algae
Bacteria
Protozoa
What structure is found in all prokaryotes?
Mitochondria
Nucleus
Ribosomes
Golgi apparatus
Which eukaryotic microorganism contains chitin in its cell wall?
Algae
Fungi
Protozoa
Bacteria
What size range best describes prokaryotic cells?
10-100 µm
1-10 mm
0.2-5 µm
50-100 nm
Which feature is unique to eukaryotic cells?
Capsule
Peptidoglycan
Membrane-bound organelles
Endospores
Which cell wall structure is characteristic of Gram-positive bacteria?
Outer membrane
Thick peptidoglycan
Chitin
LPS endotoxin
What component is found in the outer membrane of Gram-negative bacteria?
Teichoic acid
Ergosterol
LPS
Chitin
The capsule around some bacteria helps prevent:
Conjugation
Photosynthesis
Phagocytosis
Sporulation
What structure is directly involved in energy production in prokaryotes?
Nucleoid
Ribosomes
Cell membrane
Pili
Which bacteria are more likely to resist β-lactam antibiotics?
Gram-positive
Gram-negative
Fungal spores
Algae
What is the function of bacterial pili?
Motility
Sporulation
DNA transfer
Protein synthesis
Which bacterial appendage is used for biofilm attachment?
Flagella
Cilia
Fimbriae
Pseudopodia
What is the role of endospores in bacteria?
DNA transfer
Buoyancy
Heat resistance
Motility
Gas vesicles in aquatic bacteria help with:
Reproduction
Energy production
Buoyancy
Sporulation
An example of a spore-forming bacterium is:
E. coli
Streptococcus pyogenes
Bacillus anthracis
Giardia lamblia
What term describes a virus that kills its host cell?
Lysogenic
Dormant
Lytic
Latent
Which virus structure is made of proteins?
Envelope
Capsid
DNA
Lipid membrane
SARS-CoV-2 uses what to enter host cells?
Flagella
Cilia
Spike proteins
Endospores
Which viral cycle integrates viral DNA into the host genome?
Lytic
Budding
Lysogenic
Replicative
Viral envelopes are typically:
Produced by Golgi apparatus
Made of peptidoglycan
Derived from host cell membranes
Found in bacteria only
What polysaccharide gives fungal cell walls their rigidity?
Peptidoglycan
Cellulose
Chitin
Lignin
Yeasts reproduce asexually by:
Sporulation
Budding
Binary fission
Meiosis
Which membrane component in fungi is targeted by antifungals?
Peptidoglycan
Cholesterol
Ergosterol
LPS
Molds grow as:
Spores
Buds
Hyphae
Cysts
Penicillium is industrially important because it:
Degrades plastics
Produces antibiotics
Fixes nitrogen
Ferments bread
What form of locomotion does Paramecium use?
Flagella
Cilia
Pseudopodia
Pili
Which protozoan uses pseudopodia?
Giardia
Paramecium
Entamoeba
Plasmodium
The dormant, protective form of protozoa is called:
Trophozoite
Spore
Cyst
Zygospore
Giardia lamblia causes:
Tuberculosis
Diarrhea
Pneumonia
Ringworm
The active feeding stage of protozoa is the:
Cyst
Trophozoite
Endospore
Sporozoite
Which organism uses light as its energy source?
Saccharomyces
Nitrosomonas
Cyanobacteria
Entamoeba
Chemotrophs obtain energy by:
Fermenting sugar
Absorbing sunlight
Oxidizing chemicals
Engulfing host cells
Nitrosomonas obtains energy by oxidizing:
Carbon
Ammonia
Glucose
Sulfur
Thermophiles thrive in:
Cold ocean vents
Hot springs
Salty lakes
Acidic soils
Which organism can survive high radiation for bioremediation?
Thermus aquaticus
Deinococcus radiodurans
Plasmodium
Giardia lamblia
Which microorganism produces enzymes for detergents?
Pseudomonas
Bacillus subtilis
Penicillium
Nitrosomonas
Which bacteria form biofilms in cystic fibrosis patients?
Streptococcus
Pseudomonas aeruginosa
Bacillus
Clostridium
What do β-lactam antibiotics target?
DNA
Ribosomes
Cell walls
Flagella
What antibiotic blocks protein synthesis in bacteria?
Penicillin
Amphotericin B
Tetracycline
Ciprofloxacin
Ergosterol is targeted in:
Antibacterial therapy
Antiviral therapy
Antifungal therapy
Anti-parasitic therapy
Structure dictates function. Which structure allows bacterial motility?
Fimbriae
Pili
Flagella
Ribosomes
Fungal chitin provides:
Buoyancy
Motility
Rigidity
Nutrient uptake
Protozoan cysts allow survival in:
Water only
Harsh conditions
Acidic soils
Alkaline lakes
Endospores are resistant to:
Freezing
Radiation
Heat
Antibiotics only
What triggers septic shock in Gram-negative infections?
Teichoic acid
LPS endotoxin
Flagella
Ribosomal proteins
Match the microorganism with the disease it causes: Plasmodium
Diarrhea
Malaria
Dysentery
Pneumonia
Which microorganism is used in bread and beer fermentation?
Penicillium
Saccharomyces cerevisiae
Aspergillus
Clostridium
What microorganism thrives in salt lakes like the Dead Sea?
Halophiles
Thermophiles
Cyanobacteria
Algae
The microorganism used to produce Taq polymerase is:
E. coli
Deinococcus
Thermus aquaticus
Bacillus anthracis
Which structure is responsible for adhesion to surfaces in biofilm formation?
Pili
Endospore
Fimbriae
Flagella
