KCET · BIOLOGY · STD 11 - 8. Cell : The Unit of Life

A bacterial flagellum is composed of

A filament, hook and basal body
B vesicles, tubules and lamellae
C pili, fimbriae and filament
D hook, tubules and fimbriae

Verified Solution

Answer & Solution

Correct Answer

(A) filament, hook and basal body

Step-by-step Solution

Detailed explanation

(A) filament, hook and basal body,
A bacterial flagellum consists of three parts: the basal body complex, the filament and the hook that connects them.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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