Identify the components labelled A, B, C and | vedclass

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(A) The structure shown is a cross-section of a cilium or flagellum,which exhibits a $9+2$ arrangement of microtubules.$A$ points to the outermost bou

Vedclass · Accepted Answer

$A -$ Plasma membrane,$B -$ Interdoublet bridge,$C -$ Central microtubule,$D -$ Radial spoke

Vedclass · Answer

(A) The structure shown is a cross-section of a cilium or flagellum,which exhibits a $9+2$ arrangement of microtubules.$A$ points to the outermost boundary,which is the plasma membrane.$B$ points to the connection between adjacent peripheral microtubule doublets,known as the interdoublet bridge (or nexin link).$C$ points to one of the two central microtubules located inside the central sheath.$D$ points to the radial spoke,which connects the peripheral doublets to the central sheath.Therefore,the correct labelling is $A -$ Plasma membrane,$B -$ Interdoublet bridge,$C -$ Central microtubule,$D -$ Radial spoke.

Identify the components labelled $A, B, C$ and $D$ in the given section of cilia/flagella showing different parts. Choose the option which shows the correct labelling of parts.

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