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Question

Centrioles are associated with


A

DNA synthesis

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B

Reproduction

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C

Respiration

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D

Spindle formation

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Solution

The correct option is D

Spindle formation


The correct option is D.

Explanation of the correct option:

Option D:

  1. Animal cells' cytoplasm contains a pair of barrel-shaped organelles called centrioles that are close to the nuclear envelope.
  2. The skeletal framework of the cell, the microtubules, is organized by centrioles.
  3. They aid in pinpointing where the cell's nucleus and other organelles are located.
  4. Spindle formation structure is a protein structure that isolates the hereditary material in a cell.
  5. Spindle formation is important to the division of the chromosomes in a parental cell into two daughter cells during the two divisions: mitosis and meiosis similarly.

Explanations for incorrect options:

Option A:

  1. DNA synthesis is the process of creating deoxyribonucleic acid (DNA) molecules, either naturally or artificially.
  2. A macromolecule known as DNA is composed of repeated nucleotide units joined together by covalent and hydrogen interactions.
  3. Animal cells have cylindrical organelles called centrioles that aid in cell division.
  4. These are not related to DNA synthesis.

Option B:

  1. In the male gamete (sperm) centriole is found.
  2. After fertilization, the proximal centriole acts as the microtubule organizing center (MTOC) and gathers centrosomal components from the oocyte to create the sperm aster, zygote aster, and mitotic apparatus.

Option C:

  1. The oxidation of food substances for producing energy is called cellular respiration.
  2. It takes place in mitochondria.
  3. Centrioles are not related to respiration.

Final answer: Centrioles are associated with spindle formation.


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