Table of Contents
- 1 How does the mitotic spindle form?
- 2 Where do spindles form?
- 3 Which of the following mainly helps form the spindle during mitosis?
- 4 What is responsible for spindle formation in plant cell?
- 5 What will spindle fibers eventually be used for?
- 6 What stage in mitosis is the spindle formed?
- 7 When does the spindle fiber formed?
How does the mitotic spindle form?
The mitotic spindle also begins to develop during prophase. As the cell’s two centrosomes move toward opposite poles, microtubules gradually assemble between them, forming the network that will later pull the duplicated chromosomes apart.
Where do spindles form?
centrioles
Spindle fibers are protein structures that form early in mitosis, or cell division. They consist of microtubules that originate from the centrioles, two wheel-shaped bodies located in the centromere area of the cell. The centromere is also known as the microtubule organizing center.
How are spindles formed in plant cells?
Spindle fibres compose a protein structure segregating the genetic material in a cell. Plant cells lack centrioles but still, they are capable to form a mitotic spindle from the centrosome area of the cell located just exterior to the nuclear envelope.
Which of the following mainly helps form the spindle during mitosis?
microtubules
Mitotic spindle is mainly made of microtubules. These microtubules are made by polymerisation of globular tubulin proteins. There are three types of microtubules in a spindle apparatus.
What is responsible for spindle formation in plant cell?
Chromosomes, microtubules and kinetochores all contribute to spindle morphogenesis and have important roles during mitosis. A unique property of flowering plant cells is that they entirely lack centrosomes, which in animals have a major role in spindle formation.
What is a spindle and what is its function?
Definition. Spindle fibers are microscopic protein structures that help divide genetic material during cell division and organize cellular components. The spindle fibers form out of the centrosome, also known as the microtubule-organizing center, or MTOC.
What will spindle fibers eventually be used for?
The main function of the spindle fibres is to pull the chromosomes apart.
What stage in mitosis is the spindle formed?
In mitosis, these filaments form at opposite poles of the cell and meet at the equatorial plane. Collectively, they form a spindle-shaped structure, which is widest at the middle then tapers at both ends. The spindle fibers form during prophase. During metaphase of cell division, the spindle fibers radiate from the centrioles at the opposite poles.
What is the function of the spindle?
Also known as “steering knuckles,” the basic function of a spindle is to allow an axle (a shaft that supports the wheel bearings) to rotate.
When does the spindle fiber formed?
Spindle fibers form during cell division and are disassembled afterward. While there are many different kinds of microtubules, they only act as spindle fibers during cell division. After cell division, the function of creating cell structure is carried out by more interspersed microtubules and other small structures.