Admin What structure do the spindle fibers radiate from?
centrioles
During metaphase of cell division, the spindle fibers radiate from the centrioles at the opposite poles.
How are spindle fibres involved in mitosis?
Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
What structure is produced when protein fibers radiate from centrioles mitosis?
mitotic spindle
The mitotic spindle is a structure composed of microtubules that segregate chromosomes into the daughter cells during mitosis.
Is the protein material that forms the microtubules and assembles at the spindle quizlet?
While the mitotic spindle assembles, the other microtubules of the cytoskeleton partially disassemble, providing the material used to construct the spindle. The spindle microtubules elongate (polymerize) by incorporating more subunits of the protein tubulin and shorten (depolymerize) by losing subunits.
What is the protein material that forms the microtubules and assembles at the spindle?
globular tubulin proteins
Mitotic spindle is mainly made of microtubules. These microtubules are made by polymerisation of globular tubulin proteins.
What structure is produced when protein fibers radiate from centrosomes?
In animal cells a system of thin protein fibers begins to radiate out from the centrioles forming a pattern in the cytoplasm of the cell that looks like a star or aster. late prophase – the nuclear membrane and the nucleolus finally vanishes completely.
What are the protein fibers that extend from centrioles?
Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle. Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores.