Question

The prokaryotic flagella possess
(a) unit membrane enclosed fibre
(b) protein membrane enclosed fibre
(c) ‘9 + 2’ membrane enclosed structure
(d) helically arranged protein molecules

Answer 1

Answer:

(c) ‘9 + 2’ membrane enclosed structure.

Answer 2

The prokaryotic flagella:

• Option “D” is correct i.e. helically arranged protein molecule.

• The prokaryotic flagella possess a helically organized protein molecule.

• A prokaryotic flagellum is not enclosed by any membrane. It involves a single thread. The thread is made up of many identical spherical protein sub-units named flagellin.  The flagellin subunits are organized in helical spirals and make a hollow cylinder.

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