CH-21 Cell CycleBy abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-21 Cell Cycle" Click on "Start Quiz" To Continue... 1. Starting with a fertilized egg [zygote], a series of five cell divisions would produce an early embryo with how many cells? 4 8 16 32 None 2. If there are 20 chromatids in a cell, how many cetromeres are there? 10 20 30 40 None 3. Which term describes centrioles beginning to move apart in animal cells? Telophase Anaphase Metaphase Interphase None 4. Which term describes cetromeres uncoupling, sister separating and the new two new chromosomes moving to opposite poles of the cell? Telophase Anaphase Prometaphase Metaphase None 5. A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei each containing how many chromosome? 16 23 46 92 None 6. If there are 20 centomeres in a cell at anaphase, how many chromosomes are there in each daughter cell following cytokinesis? 10 20 30 40 None 7. The best conclusion concerning delta is that the cells? Contain no DNA Contain no RNA Contain only one chromosome that is very short Are actually in the G0 phase None 8. If a cell has 8 chromosomes at metaphase of mitosis, how many chromosomes will it have during anaphase? 1 2 4 8 None 9. Taxol, anticancer drug, disrupts microtubule formation by binding to microtubules and accelerating their assembly so surprisingly, this stop mitosis. Specifically taxol must effect: The fibers of the mitotic spindle Anaphase Formation of centrioles The S phase of the cell cycle None 10. Chromosomes first become visible during which phase of mitosis? Telophase Prophase Metaphase Anaphase None 11. A group of cells is assayed for DNA content immediately following mitosis and is fond to have an average of 8 picograms of DNA per nucleus. Those cells would have how many picograms at the end of te S phase and at the end of G2. 8;16 16;8 16;16 12;16 None 12. Which of the following questions might be answered by such a method? How many cells are produced by the culture per hour? What is the length of the S phase of the cell cycle? When is the S chromosome synthesized? How many picograms of DNA are made per cell cycle? None 13. Which is the shortest part of the cell cycle? G0 G1 S G2 M None 14. Nerve and muscle cells are in this phase: G0 G1 S G2 None 15. An enzyme that attaches a phosphate group to another molecule is called: Phosphates Phosphorylase Kinase ATPase None 16. Besides the ability of some cancer cells to over proliferate, what else could logically result in a tumor? Metastasis Changes in the order of cell cycle stages Lack of appropriate cell death Inability to form spindles None 17. In the cells of some Organism, mitosis occurs without cytokinesis. This will result in: Cells with more than one nucleus Cells that are unusually small Cells lacking nuclei Destruction of chromosomes None 18. Which of the following is not a way that cell division solves the problems of cell growth? Cell division provides each daughter cell with its own copy of DNA Cell division increases the mass of the original cell Cell division increases the surface area of the original cell Cell division reduces the original cell's volume None 19. When during cell cycle is a cell's DNA replicated? G1 phase G2 phase S phase M phase None 20. Which of the following is a factor that can stop normal cells from growing? Contact with other cells Growth factors A cut in the skin Cyclin that has been taken from a cell in mitosis None 21. It is the period of extensive metabolic activity: G1 G0 S G2 None 22. Cancer is caused mainly by mutations in: Sex cells S-phase Somatic cells G2 stage None 23. The sex chromosome complement in individuals with Klinefelter's syndrome is: XXY XXYY XYYY Xy None 24. Mitosis is divided into: Cytokinesis Interphase Both A and D Karyokinesis None 25. The process of meiosis is completed in how many divisions? 3 5 2 4 None 26. Reduction in the chromosome number occurs during: Meiosis 2 Mitosis Both A and B Meiosis 1 None 27. Prophase one of meiosis is further divided into how many sub stages? 4 6 5 3 None 28. The length of chromosomes is: 0.40-0.80 um 1 um-3 um 0.25-0.50 um 0..60-1.2 um None 29. Cancer: Somatic cells Anaphase 1 Plant cell Pachytene None 30. XXY Turner's syndrome Necrosis Klinefelter's syndrome Mitosis None 31. Which type of tissue enables a person's fingers to move as he or she plays the piano? Nerve Connection Muscle Joints None 32. Cancer is a disorder in which some cells have lost the ability to control their: Spindle fibers Size Growth rate Shape None 33. The two main stages of cell division are called: Synthesis and cytokinesis Cytokinesis and mitosis Mitosis and interphase Karyokinesis andCytokinesis None 34. Which of the following is a phase of mitosis? S phase Prophase Interphase G0 None 35. Turner's syndrome: Missing X Rapid division Cell cleavage Diplotene None 36. Malignant tumor: Diplotene Rapid division Cell cleavage Missing X None 37. Cell death: Necrosis Klinefelter's syndrome Turner's syndrome Mitosis None 38. Crossing over: Plant cell Pachytene Anaphase1 Somatic cells None 39. G2 phase: Resting phase 4.5 hours Chromatin Aster and spindle None 40. Small localized tumors are called: Cancer Benign Malign Interdigitate None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
