Exam 10: Cell Division and Mitosis

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Addition of mitosis-promoting factor (MPF)to germinal cells in the skin arrested in G2 leads the cells to ____. ​

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    Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel B.   Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel B.

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    Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel C.   Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel C.

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    Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel D. ​   Answer the following questions using the accompanying figure. Figure 10.1 Identify the stage of mitosis shown in panel D. ​

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Identify the stage of mitosis at which each of the following activities occurs. Some choices may be used more than once.
Premises:
sister chromatids are pulled to opposite spindle poles
Responses:
prometaphase
prophase
metaphase
Correct Answer:
Verified
Premises:
Responses:
sister chromatids are pulled to opposite spindle poles
prometaphase
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If a diploid cell with 40 chromosomes undergoes meiosis, each daughter nuclei will have ____ chromosomes. ​

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Most cancers require at least two mutations: 1)one in an oncogene, which encodes proteins that trigger cell division, and 2)one in a tumor suppressor gene, whose protein products, in their unmutated form, play a key role in preventing the cell cycle from progressing if the DNA is damaged or in the absence of specific cues. Which class of proteins might be considered tumor suppressors? ​

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What are the two main features of prokaryotic binary fission?

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An organism with a chromosome number of n =7 is said to be haploid.

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Some bacteria produce the enzyme β-lactamase, which results in resistance to certain antibiotics such as penicillin. Since these same organisms reproduce asexually, they produce offspring that ____. ​

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Chromosomes are in a condensed form at which stage(s)of the cell cycle? ​

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In order to understand how chromosomes move during anaphase of mitosis, researchers tagged ____ with a fluorescent label before photobleaching the cell and examining chromosomal movement under a microscope. ​

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The separation of duplicated chromosomes into two new nuclei is known as ____. ​

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Chromatin condenses into chromosomes and the mitotic spindle begins to form during ____. ​

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When growth factors bind to receptors on the cell surface, the signaling cascade will ____. ​

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During the mitotic spindle checkpoint, ____. ​

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Identify the stage of mitosis at which each of the following activities occurs. Some choices may be used more than once.
Premises:
chromosomes align at the center of the cell
Responses:
metaphase
telophase
prometaphase
Correct Answer:
Verified
Premises:
Responses:
chromosomes align at the center of the cell
metaphase
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Progression through the phases of the cell cycle is regulated by fluctuating concentrations of ____. ​

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Bacterial DNA is not compacted into an organized higher structure.

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Where is the centromere found? ​

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