Question

Microtubule involved in the
(a)Cell division
(b)DNA recognition
(c)Muscle contraction
(d)None of the above

Answer 1

Hint: Microtubule is highly dynamic polymers that are part of the cytoskeleton which provide structure and shape to the eukaryotic cells. They are about 50 micrometers long and the outer diameter is between 23 and 27 nm while the inner diameter is between 11 and 15 nm.

Complete answer:
Microtubule is involved in the cell division during the cell movements, chromosome movements, and intracellular transport. Microtubules are found in all eukaryotic cells which involve the process of mitosis, cell motility, and maintenance of cell shape. They constitute alpha and beta-tubulin subunits which are aligned in linear protofilaments. Microtubules together form a wide hollow cylinder that contains 10 to 15 protofilaments which are formed 24 nm wide. Microtubules are disproportionate and get orientated during the interphase cell stage. The cellular cytoskeleton helps in supporting the transport of vesicles and organic leases which is influenced by gene expression.

Additional information:
DNA recognition: DNA recognition happens by proteins which depend on two types of mechanism that involves the formation of hydrogen bonds with a specific basis and the sequence-dependent deformations of the DNA helix. It shows the binding of arginine with the protein-DNA and it enhances the negative electrostatic potential of the DNA. The ability to detect vocal variations in DNA shape is indicated by these and the electrostatic potential which enables the proteins to use information in the minor groove. The formation of specific hydrogen is to achieve DNA binding specificity.
Muscle recognition: Muscle is a soft tissue found in animals which contains protein filaments and produces a contraction that changes both the length and shape of the cell. The mesodermal layer of the embryonic germ cell forms muscle tissues known as myogenesis. The origin and insertion location that reminds the action of muscles and the cross-sectional area of the muscle determines the amount of force generated by different numbers of sarcomeres.

So, the correct answer is 'Cell division'.

Note: Microtubules consist of a Wall of 13 columns of tubulin molecules that function to maintain the shape and motility of a cell. The inner framework is provided by the cytoskeleton which enables it to move and change shape. The fibroblasts contain fluorescently actin and microtubules and 27 microtubules get organized into 9 bundles of three.