Basic Clinical Laboratory Techniques 6E
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ISBN: 9781133893943
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Answer number 4 only
Transcribed Image Text:What is a checkpoint? Give an example and say
what happens at that checkpoint
3. Put the images in the correct order in the cell
cycle and name the stages. For the order part,
just use the numbers: if the correct order is 1 2 3
45, write it in that order.
1
4
3
0000
32
m
S
FRED
5
2
Metaphase plat
Censomon
Homoligous
chromones
Controles
Aster
4. How do embryonic and adult stem cells
differ?
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- How can defects in the regulation of cell-cyle checkpoints would affect cells and explain how these defects relate to uncontrolled division in cancer and cancer progression? Describe the movements of chromosomes and the status of the microtubules spindle during interphase, prophase, metaphase, anaphase, and telophase? Explain the movement of chromosomes during stages of meoisis to produce sperm and eggs?arrow_forwardof my celle chose are wels smaller than normal. According to Model 1, what part(e) of the cell cycle is (ere) ou likely being affected? Some cancerus me 7. In Model 1, if the length of the arrow represents time, then for those cancerous cells, what hap pens to the time that is necessary for the cell cycle? What implication might this have for doctors who are treating cancer patients? Why? Living things must grow and develop. At times they suffer injuries or damage, or cells simply wear out. New cells must be formed for the organism to survive. What process must occur to make a new, properly- functioning cell? Model 1 - Mitosis as Part of the Cell Cycle Prophase Metaphase Anaphase Mitosis How do living things grow and repair themselves! Replicated chromosome (2 sister chromatids) 0000 * Centriole Spindle fibers Nuclear membrane Telophase 1. Refer to Model 1. List the four phases in the mitosis process. 2. Where is mitosis in the cell cycle? Before 3. What three phases of the cell cycle…arrow_forwardCan you draw 4th cell division of the adult stem cells. 1st and 2nd are symmetrically. 3rd and 4th are asymmetrically. What kind of cell is the product at the 4th division? Explain your reasoningarrow_forward
- 11:51 B +$. ← MitosisAndMeiosis.docx AD B C D E F 2. In what stage were most of the onion root tip cells? Does this make sense? 4. What would happen if mitosis were uncontrolled? 3. As a cell grows, what happens to its surface area-to-volume ratio (hint: think of a balloon being blown up)? How does this ratio change with respect to cell division? 5. How accurate were your time predictions for each stage of the cell cycle? & ON 5G A A C 6. Discuss one observation you found interesting while looking at the onion root tip cells. Cell Cycle Division: Mitosis Beads Dia ר Dronhaco EXPERIMENT 2: FOLLOWING CHROMOSOMAL DNA MOVEMENT THROUGH MITOSIS PAGE 5/... OeScience Labs, 2016arrow_forwardBPA is a chemical compound that has historically been used in themanufacture of plastic products. However, cells often mistake BPAcompounds for hormones that accelerate the cell cycle. Because ofthis, BPA is associated with an increased risk of certain cancers. Question: How might BPA interact with the cell cycle and its checkpoints?arrow_forwardDespite being small animals, naked mole rats are almost entirely resistant to cancer. Watch the following brief video on one potential mechanism for the prevention of cancer in naked mole rats. https://youtu.be/bhNBeuhxkF0?si=38aelHLW1N6vN8-b Based on what you know about mitosis and cancer cells, why would a mechanism that prevents cell crowding reduce the likelihood of cancer developing?arrow_forward
- List and briefly describe three major cell cycle checkpoints. For each checkpoint, predict the consequences if the checkpoint fails to work properly.arrow_forwardFigure 28.11 depicts the eukaryotic cell cycle. Many cell types “exit� the cell cycle and don’t divide for prolonged periods, a state termedG0; some, for example neurons, never divide again. a. In what stage of the cell cycle do you suppose a cell might be when it exits the cell cycle and enters G0? b. The cell cycle is controlled by checkpoints, cyclins, and CDKs. Describe how biochemical events involving cyclins and CDKs might control passage of a dividing cell through the cell cycle.arrow_forwardMatch the stage of mitosis with the following key events.arrow_forward
- Why is cell furrowing important in cell division? If cytokinesis did not occur, what would be the end result?arrow_forwardBiologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.arrow_forwardDescribe the mitotic spindle. Include what it is made of, how it forms, and what its role is in cell division.arrow_forward
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