Fill in the blank: Some will be used more than once. A. Prophase B. Interphase C
ID: 81688 • Letter: F
Question
Fill in the blank: Some will be used more than once. A. Prophase B. Interphase C. Telophase D. Metaphase E. Anaphase F. Centromere G. Chromatid H. Cytokinesis I. Mitosis J. Spindle fiber K. Cell plate What phase are daughter cells in as a result of mitosis? During what phase of mitosis do centromeres divide and the chromosomes move toward their respective poles? What is the phase where chromatin condenses to form chromosomes? What is the name of the structure that connects the two chromatids? In a chromosome pair connected by a centromere, what is each individual chromosome called? What are the two parts of cell division? What structure forms in prophase along which the chromosomes move? Which phase of mitosis is the last phase that chromatids are together? Which phase of the cell cycle is characterized by a non-dividing cell? What structure Is produced when protein fibers radiate from centrioles? What forms across the center of a cell near the end of telophase? Period of cell growth & development between mitotic divisions?Explanation / Answer
17. B - Interphase - In interphase daughter cells undergo three stages - G1 - Cells grow and increase in size. They are metabolically active. S phase - DNA synthesis takes place. Chromosomes are replicated. G2 phase - Cell readies itself for division. Chromosome condensation takes place and if the centriole is present, it is replicated.
18. E. Anaphase - The sister chromatids are pulled apart and move towards the opposite poles as the microtubules shorten.
19. A. Prophase - The DNA wraps tightly around chromosome binding proteins and forms linear chromosomes.
20. F. Centromere - The sister chromatids are attached to each other at the centromere with the help of cohesin protein.
21. G. Chromatid - Replicated chromosomes consists of two identical halves (sister chromatids), each called a chromatid.
22. I, H - Mitosis and Cytokinesis - A cell completes it division via mitosis (division of the nucleus) and cytokinesis (division of the cytoplasm) to form daughter cells.
23. J. Spindle fiber - Spindle fibers, also called mitotic spindles, are protein structures made up of microtubules that come from centrioles present in the centriomere of the cell.
24. D. Metaphase - The sister chromatids align themselves at the equatorial plane of the cell as they pulled by the kinetochore microtubules.
25. B. Interphase - Interphase is the stage where a cell prepares for cell division. It has three stages - G1, S and G2.
26. J. Spindle fiber - Spindle fiber formation begins during prophase stage of cell division. Spindle fibers are made up of cytoskeletal microtubules. Two motor proteins kinesin and dynein structure the microtubules into a spindle.
27. K. Cell Plate - Cell plate forms in plant cell during cytokinesis as opposed to a cleavage furrow in dividing cells of animals. The reason for cell plate formation in plants is because plants have cell walls which do not allow cleavage furrow to form. Membrane enclosed vesicles of golgi apparatus move to the center of the cell and fuse together to form the cell plate. The cell plate then fuses with the plasma membrane, producing two daughter cells.
28. B. Interphase
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