NEET BIOLOGY

Detailed explanation-1: -The organelle that acts as a supporting skeletal framework of the cell is the endoplasmic reticulum. The endoplasmic reticulum provides additional mechanical support to the cell by dividing the fluid content of the cell into compartments. That is why it is considered one of the elements of the cytoskeleton.

Detailed explanation-2: -cytoskeleton, a system of filaments or fibres that is present in the cytoplasm of eukaryotic cells (cells containing a nucleus).

Detailed explanation-3: -The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement.

Detailed explanation-4: -Microtubules are the thickest of the cytoskeletal fibers. These are hollow tubes that can dissolve and reform quickly. Microtubules guide organelle movement and are the structures that pull chromosomes to their poles during cell division. They are also the structural components of flagella and cilia.

Detailed explanation-5: -The cytoskeleton is a complex dynamic network of filamentous structures present in the cytoplasm. It is made of microtubules, microfilaments, and intermediate filaments. The cytoskeleton is not organelles. They are proteinaceous structural elements that provide mechanical support and also maintain cell shape.