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17 Cards in this Set
- Front
- Back
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The Centromere Is region in which |
Chromatids remain attached to one another until anaphase. |
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Taxol is an anti cancer drug extracted from the Pacific yew tree.in animal cells Taxol disrupts microtubles formation. Surprisingly this stops mitosis.taxol must affect? |
The formation of the mitosis spindle |
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At which phase are the centrioles beginning to move apart in the animal cell. |
Prophase |
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If there are 20 chromatids in a cell how many centromeres are there |
10 |
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If cells in the process of dividing are subject to colchicine,a drug that intetfere with the formation of the spindle apparatus at which stage will mitosis be arrested? |
Interphase |
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Measurement of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus.The measured DNA levels ranged from 3 to 6 picograms per nucleus . In which stage of the cell cycle 6 picograms of DNA? |
G2 |
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A group of cells are assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA per nucleus. How many picograms would be found at the end of S and at the end of G2? |
16;16 |
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For anaphase to occur which of the following must occur? |
Cohesion must cleave |
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Why do chromosome coil during mitosis |
To allow chromosome to move without becoming entangled and breaking |
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Which of the following best describes how chromosomes move towards the poles of the spindle during mitosis |
The chromosomes are "reeled" in by the contraction of spindle microtubles and motor proteins of the kintochores move to the chromosomes al ok no the spindle microtubles |
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Which of the following is a function of those spindle microtubles that do not attach to kineochores |
Maintaining the overlap of microtubles in the cells center |
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During which phase of mitosis do the chromatids become chromosomes |
Telophase |
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Which of the following was a discovery that had to be made before human chromosomes could be correctly counted? |
How to use a hypotonic solution to swell nuclei |
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What is a cleavage furrow |
A groove in the plasma membrane between daughter cells |
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What is the correct chromosomal condition at the premetaphase of mitosis? |
B |
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What is the correct chromosomal condition for one daughter nucleus at telophase of mitosis |
E |
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If a cell whose nucleus material is shown in Figure 12.2 continues toward the completion of mitosis which of the following events might occur next? |
Formation of telophase nuclei |
