In cell biology, the spindle apparatus (or mitotic spindle) refers to the cytoskeletal structure of eukaryotic cells that forms during cell division to separate sister chromatids between daughter cells.
What anchors the chromatids around during cell division?
Answer: Spindle fibers are part of a spindle apparatus that moves chromosomes during mitosis and meiosis to ensure even chromosome distribution between daughter cells.
What cell organelle is responsible for pulling chromosomes apart in cell division?
Centrioles – Organizing Chromosomes
Every animal-like cell has two small organelles called centrioles. They are there to help the cell when it comes time to divide. They are put to work in both the process of mitosis and the process of meiosis.
What organelle anchors cells?
The cytoskeleton consists of microtubules, intermediate fibers, and microfilaments, which together maintain cell shape, anchor organelles, and cause cell movement.
What holds individual chromatids together?
…of a set of duplicate chromatids that are held together by the centromere. The centromere is the point of attachment of the kinetochore, a protein structure that is connected to the spindle fibres (part of a structure that pulls the chromatids to opposite ends of the cell).
What happens if spindle fibers don’t form?
For herbicides with this mode of action, the prophase sequence is normal, but without the spindle apparatus, chromosomes are unable to move into the metaphase configuration and daughter chromosomes cannot migrate to their respective poles.
How many chromosomes do human daughter cells have?
At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes. 2.
What are the 4 organelles involved in cell division?
Eukaryotic cells contain at least three types of double membrane-bounded organelles (cell nucleus, mitochondria and plastids), four types of single membrane-bounded organelles (endoplasmic reticulum, Golgi apparatus, lysosomes and microbodies) and the cytoskeleton, which comprises tubulin-based structures (including …
What cell part packages proteins?
Vesicles that contain newly made proteins move through the cytoplasm from the ER to an organelle called the Golgi apparatus. The Golgi apparatus is a set of flattened, membrane-bound sacs that serve as the packaging and distribution center of the cell.