WorksheetsBacterial Structures Quiz
Total questions: 10
Worksheet time: 5mins
A pathogenic bacterium avoids phagocytosis and forms shiny, mucoid colonies on agar plates. Which structure is most responsible?
Flagella
Capsule
Pili
Endoflagella
The capsule of a bacterium is primarily composed of:
Protein
Lipid
Polysaccharide
Nucleic acid
A bacterium adheres tightly to epithelial cells in the urinary tract but does not exhibit motility. Which structure enables this attachment?
Flagella
Capsule
Fimbriae
Endoflagella
Fimbriae are best described as:
Carbohydrate structures used for protection
Protein structures used for attachment
Protein structures used for motility
Lipid structures used for signaling
Two bacteria briefly connect and DNA is transferred from one cell to another. Which structure allows this process?
Fimbriae
Capsule
Pilus
Flagellum
Which structure is specifically involved in conjugation?
Capsule
Flagella
Pilus
Endoflagella
A motile bacterium triggers a strong immune response due to variation in its surface antigens. Laboratory testing identifies H antigens. Which structure contains these antigens?
Capsule
Fimbriae
Flagella
Endoflagella
The protein that makes up bacterial flagella is called:
Pilin
Actin
Flagellin
Keratin
A bacterium moves through thick mucus using a twisting, corkscrew motion and is difficult to observe using light microscopy. Which structure enables this type of motility?
External flagella
Pili
Endoflagella
Capsule
Which pairing correctly matches structure with composition?
Capsule – protein
Fimbriae – carbohydrate
Flagella – protein
Endoflagella – polysaccharide
