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Question

Choose the correct options from the following:
A. Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin.
B. The centrioles in a centrosome lie parallel to each other.
C. The central part of the centriole is also proteinaceous and called the hub.
D. Centrioles form the spindle fibres that give rise to spindle apparatus during cell division.

A
A, B, C
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B
B, C, D
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C
A, C, D
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D
A, B, D
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Solution

The correct option is C A, C, D
Centrosome is an organelle usually containing two cylindrical structures called centrioles. The centrioles in a centrosome lie perpendicular to each other. Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin. Each of the peripheral fibril is a triplet. The central part of the centriole is proteinaceous and called the hub. The centrioles form the basal body of cilia or flagella, and spindle fibres that give rise to spindle apparatus during cell division.

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