What organelle functions to form the mitotic spindle?
Structures called centrioles, which themselves are made of microtubules, sit at both cell shafts during mitosis and are liable for combining the mitotic axle filaments.Centrioles are responsible for the formaton of Mitotic spindle.
Centrioles are barrel-molded structures present in eukaryotic cells aside from contagious and plant cells. A couple of centrioles is contained inside a structure called centrosome, present close to the core. These structures assume and significant job in the connection and direction of microtubules. Microtubules are slender, empty chambers that assume a significant job in cell division, intracellular vehicle, motility, and are additionally imperative to keep up the auxiliary uprightness of a cell.
Centrioles are the nucleation focuses for shaft arrangement during mitosis and meiosis, and furthermore fill in as the basal body for cilia and flagella.
The centriole involves a lot of nine microtubule triplets organized in a round way, which gives it a barrel-formed appearance. Inside the centrosome, two such centrioles (mother centriole and girl centriole) are orchestrated opposite to one another. They are joined to one another firmly, and are encompassed by a thick lattice called pericentriolar material. The mother centriole is a full grown structure that has extra limbs engaged with securing and situating the microtubules. The little girl centriole is a relatively youthful or juvenile structure. The exact distance across, length and kind of members appended relies upon the specific species and tissue type.
2a.
The mitotic spindle is composed of a network of which cytoskeletal
filaments?
2b. Some type of chemotherapeutic drugs, used to treat cancer,
disrupt microtubules and the mitotic spindle. Why are drugs that
disrupt the mitotic spindle effective cancer treatment?
2c. In humans, both meiosis and mitosis start with a cell that
has ____ duplicated chromosomes. Remember, cells duplicate their
DNA during S phase in the cell cycle; this happens prior to meiosis
or mitosis. Meiosis includes two rounds of...
The spindle checkpoint is a key mechanism that controls mitosis. Which of the following are functions of the spindle checkpoint? Preventing dephosphorylation by inactivation of mitotic phosphatases Sensing attachment of kinetochores to microtubules Protecting Cyclin B from degradation until the metaphase-to-anaphase transition Protecting cohesin from cleavage by separase until all chromosomes are attached
A) Microtubule motor proteins contribute to the assembly and overall length of the mitotic spindle. Using information from class or the textbook, predict what effect the following situations will have on the spindle assembly dynamics and the overall length of the spindle. Provide a short explanation for your answer. [Note: Assume that the indicated mutants are the only form of that protein in the cell.] (2 points each, 4 points total) i) a loss of function mutant in kinesin-14: ii)...
What organelle functions to synthesize polypeptides?
44. The mitotic spindle (the "ropes" that pull chromatids apart during cell division) A. Is composed of chromosomes and moves by itself during mitosis. B. Is only seen during interphase. C. Is composed of microtubules and associated proteins. It helps pull chromosomes to opposite ends of a dividing cell duri D. Is composed of microtubules and associated proteins. It helps pull chromosomes to opposite ends of a dividing cell duri
1. The mitotic spindle and microtubules were not present in the mitosis models; describe their process throughout the steps of mitosis. 2. Are the chromosomes in mitosis a mixture of mother and father chromosomes? Explain your answer, comparing the process to meiosis. 3. Using your microscope images in Photo 12 and Photo 18, describe the difference in the telophase/cytokinesis step of mitosis between plants and animals. 4. Describe the similarities and differences between the microscopic images of the plant and...
Which of the following is NOT a consequence of activation of mitotic Cdk-cyclin complexes? a. condensation of chromosomes b. formation of the mitotic spindle c. replication of DNA d. dissolution of the nuclear envelope
3. Many chemotherapy drugs used to treat cancer work by modifying the mitotic spindle. Given the short description of the two drugs here, describe how these drugs are effective in stopping cancer cells and where in the cell cycle they are effective. Paclitaxel works by interfering with normal microtubule breakdown during cell division and Vinblastine works by binding tubulin, thereby inhibiting the assembly of microtubules. 4. A researcher has developed three different cell lines that are able to each ignore...
Match the mitotic stage to what is occurring during that
stage
DQuestion 3 5 pts Please match the mitotic stage to what is occurring during that stage Interphase [ Choose] Chromosomes line up at the center of the cell Spindle fibers continue to pull the chromosomes to opposite sides of the cell Nuclear membrane is beginning to dissolve while the centrioles are making their way to opposite poles DNA is replicating Cytokinesis occurs and nuclear membranes reform Prophase Metaphase Choose...
04 Homework Activity: Tour of an Animal Cell - Organelle Functions Part A - Organelle function Drag the correct description under each cell structure to identify the role it plays in the cell. Reset Help Works with mRNA to synthesize proteins. Converts chemical fuel ino packets of chemical energy that can power the cell. Stores the genetic information of the cell. Site of lipid synthesis Breaks down macromolecules using digestive enzymes Nucleus Lysosome Mitochondrion Ribosome Smooth ER Type here to...