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Yes, microtubules are polar structures with distinct plus and minus ends. They grow by adding tubulin subunits predominantly at the plus end, while depolymerization usually occurs more at the minus end. This polarity is essential for microtubule-based processes such as cell division and intracellular transport.
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What is the function of polar?
The function of polar microtubules is to elongate while the centromere microtubules shorten, so the chromatids can reach the opposite poles (centrioles) of the cell.
Which is part of the cytoskeleton?
Microtubules
The hollow tubes of protein that help maintain the shape of the cell is what?
The hollow tubes of protein that help maintain the shape of the cell are called microtubules. They are part of the cytoskeleton and play crucial roles in cell structure, cell division, and intracellular transport.
Are microtubules found in eukaryotic cells or prokaryotic cells?
Microtubules are found in Eukarytotic cells. However, some archeabacteria have been found to contain microtubule-like structures but these are not true microtubules.
Spindle fibers are made of hollow tubes of protein called what?
Spindle fibers are made of microtubules, which are composed of the protein tubulin. These microtubules play a critical role in the segregation of chromosomes during cell division.
What is the function of polar microtubules?
Polar microtubules are a type of microtubule that play a key role in cellular processes such as cell division (mitosis and meiosis). They help in organizing and segregating chromosomes during cell division by attaching to the kinetochore proteins on chromosomes and facilitating their movement. Additionally, polar microtubules contribute to the overall structure and organization of the cell's cytoskeleton.
What structures make up the fibers of the mitotic spindle?
The mitotic spindle is composed of microtubules, which are dynamic structures made up of tubulin protein subunits. It consists of three main types of microtubules: kinetochore microtubules that attach to the chromosomes, polar microtubules that interact with each other to help push the poles of the cell apart, and astral microtubules that anchor the spindle poles to the cell membrane.
What is the function of polar?
The function of polar microtubules is to elongate while the centromere microtubules shorten, so the chromatids can reach the opposite poles (centrioles) of the cell.
Distinguish between kinetochore fibers and polar fibers?
Kinetochore fibers are microtubules that attach to the kinetochore region of a chromosome during cell division, helping to pull the chromosome apart. Polar fibers, on the other hand, are microtubules that interact with each other and help push the poles of the cell apart during cell division, providing structural support.
What is the stystem of microtubules?
The Cytoskeleton is a system of microtubules, in a cell.
Organelles used to move chromosomes are the?
microtubules
Microtubules are polar structure in that one end called the end polymerizes and depolymerizes at a much higher rate than the other end the - end From the results indicate the end and explain?
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What microtubules are necessary for sorting the chromosomes in cell division?
The kinetochore microtubules
What material makes up flagellum?
Flagella possess a central bundle of microtubules in which nine outer double microtubules surround a central pair of single microtubules. This characteristic "9 + 2" arrangement of microtubules is also seen in cilia.
What are spindle fibers composed of?
Spindle fibers are composed of microtubules, which are polymers of the protein tubulin. These microtubules play a crucial role in cell division by helping to separate the chromosomes during mitosis and meiosis.
What material are microtubules composed of?
Microtubules are polymers of tubulin. Microfilaments are polymers of actin.
Which cytoskeleton fibers are found in cilia and flagella?
Cilia and flagella contain microtubules, which are a type of cytoskeleton fiber made up of tubulin protein subunits. Microtubules provide structural support and are involved in the movement of cilia and flagella.
