NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The whiplike tail on some bacteria that help them move
A
Nucleoid
B
Pili
C
Flagella
D
Cilia
Explanation: 

Detailed explanation-1: -Bacterial motility is typically provided by structures known as flagella. The bacterial flagellum differs in composition, structure, and function from the eukaryotic flagellum, which operates as a flexible whip-like tail utilizing microtubules.

Detailed explanation-2: -Most motile bacteria move by means of flagella. The structures and pattern of movement of prokaryotic and eukaryotic flagella are different. Eukaryotes have one to many flagella, which move in a characteristic whiplike manner. The flagella closely resemble the cilium in structure.

Detailed explanation-3: -The bacterial flagellar motor is powered by the transmembrane electrochemical gradient of ions, namely ion motive force (IMF) and rotates the flagellar filament to generate thrust to propel the cell body. The maximum motor speed reaches 300 revolutions per second in E.

Detailed explanation-4: -A flagellum (/fləˈdʒɛləm/; pl. flagella) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility.

Detailed explanation-5: -The long part of the flagellum is made of a protein called flagellin-who would have guessed? This protein is arranged as individual helical threads which wrap around one another to form a braid and the braids wrap around one another to form a filament (like threads and braids which form a rope).

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