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Homework answers / question archive / Louisiana State University BIOL 1201 Quiz Chapter 12 1)A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes

Louisiana State University BIOL 1201 Quiz Chapter 12 1)A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes

Biology

Louisiana State University

BIOL 1201

Quiz

Chapter 12

1)A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain?

 

2. Why is it difficult to observe individual chromosomes with a light microscope during interphase?

 

  1. Which of the following is true of kinetochores?

 

  1. Which of the following correctly matches a phase of the cell cycle with its description?

 

  1. In some organisms, such as certain fungi and algae, cells undergo the cell cycle repeatedly without subsequently undergoing cytokinesis. What would result from this?

 

  1. Which of the following is found in binary fission but not in mitosis?

 

  1. Cytochalasin B is a chemical that disrupts microfilament formation. How would this interfere with cell division?

 

  1. Cells will usually divide if they receive the proper signal at a checkpoint in which phase of the cell cycle?

 

  1. Which of the following is true of benign tumors, but not malignant tumors?

 

 

  1. A group of cells is 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 the end of G2?

 

 

  1. If the cell whose nuclear material is shown in the figure continues toward completion of mitosis, which of the following events would occur next?

 

  1. Which of the following triggers the cell’s passage past the G2checkpoint into mitosis?

 

  1. A plant-derived protein known as colchicine can be used to poison cells by blocking the formation of the spindle. Which of the following would result if colchicine is added to a sample of cells in G2?

 

  1. The following information applies to the question below.

Several organisms, primarily protists, have what are called intermediate mitotic organization.

What is the most probable hypothesis about these intermediate forms of cell division?

 

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