Question

Array in bacterial flagella is -
(1)9+2 (2)9+0 (3)9+1
(4)1+0​

Answer 1

Answer:

9+2 is the correct answer

Answer 2

(1) 9+2

Bacterial flagella.

" Bacterial flagella are filamentous organelles that drive cell locomotion. They thrust cells in liquids (swimming) or on surfaces (swarming) so that cells can move toward favorable environments ".

• The study of flagellum states that they are covered with plasma membrane.

• Their core is called axoneme, it possesses a number of microtubules running parallel to the long axis.

• The axoneme usually has nine pairs of doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules. Such an arrangement of axoenmal microtubules is referred to as the 9+2 array.

• The arrangement of axonemal microtubules in cilia or flagella is called 9+2 array.

Both flagella and cilia have a 9 + 2 arrangement of microtubules. This arrangement refers to the 9 fused pairs of microtubules on the outside of a cylinder, and the 2 unfused microtubules in the center.

Hence Array in bacterial flagella is - 9 +2.