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Exam 9: The Cell Cycle

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Question 31

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The following questions are based on Figure 9.3. Figure 9.3 -G1 is represented by which numbered part(s) of the cycle?

A) I or V
B) II or IV
C) III only
D) IV only
E) V only

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Question 32

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Researchers began a study of a cultured cell line. Their preliminary observations showed them that the cell line did not exhibit either density-dependent inhibition or anchorage dependence. What could they conclude right away?

A) The cells originated in the nervous system.
B) The cells are unable to form spindle microtubules.
C) The cells have altered series of cell cycle phases.
D) The cells show characteristics of tumors.
E) The cells were originally derived from an elderly organism.

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Question 33

Multiple Choice

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The beginning of anaphase is indicated by which of the following?

Compared to most prokaryotic cells, eukaryotic cells typically have

What is produced if a cell divides by mitosis but does not undergo cytokinesis?

Which of the following is true concerning cancer cells?

Motor proteins require which of the following to function in the movement of chromosomes toward the poles of the mitotic spindle?

The following questions are based on Figure 9.3. Figure 9.3 -In Figure 9.3, mitosis is represented by which numbered part(s) of the cycle?

Use the following information to answer the questions below. Nucleotides can be radiolabeled before they are incorporated into newly forming DNA and can therefore be assayed to track their incorporation. In a set of experiments, a student-faculty research team used labeled T nucleotides and introduced these into the culture of dividing human cells at specific times. -In the cells of some organisms, mitosis occurs without cytokinesis. This will result in

The following questions are based on Figure 9.3. Figure 9.3 -Which number represents the point in the cell cycle during which the chromosomes are replicated?

At the M phase checkpoint, the complex allows for what to occur?

Use the following information to answer the questions below. Nucleotides can be radiolabeled before they are incorporated into newly forming DNA and can therefore be assayed to track their incorporation. In a set of experiments, a student-faculty research team used labeled T nucleotides and introduced these into the culture of dividing human cells at specific times. -The drug cytochalasin B blocks the function of actin. Which of the following aspects of the animal cell cycle would be most disrupted by cytochalasin B?

Which of the following is released by platelets in the vicinity of an injury?

Use the following information to answer the questions below. Nucleotides can be radiolabeled before they are incorporated into newly forming DNA and can therefore be assayed to track their incorporation. In a set of experiments, a student-faculty research team used labeled T nucleotides and introduced these into the culture of dividing human cells at specific times. -A particular cell has half as much DNA as some other cells in a mitotically active tissue. The cell in question is most likely in

Which of the following are primarily responsible for cytokinesis in plant cells but not in animal cells?

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?

You have the technology necessary to measure each of the following in a sample of animal cells: chlorophylls, organelle density, picograms of DNA, cell wall components, and enzymatic activity. Which would you expect to increase significantly from M to G1?

The following information applies to the questions 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?

Which of the following describes cyclin-dependent kinase (Cdk) ?

If there are 20 chromatids in a cell, how many centromeres are there?