Homework Answers
The procedure that is developed to identify cancerous tissue by counting the number of cells undergoing mitosis is cell counting by hemocytometer. if we will examine a normal tissue which undergoes mitosis, we can prepare a cell sample culture and could examine this culture with the help of hemocytometer. The cell count in different grids of the chamber is noted carefully. The whole grid contains 9 square while central area contains 25 large and 16 smaller squares inside the large ones, each with side 1 mm^2. Now if the sample culture from cancerous tissue is loaded into the chamber od hemocytometer, the grids will show higher number of cell counting as compared to earlier. Anything which is more far away from normal under all optimum conditions with uncontrolled growth and mitosis is considered cancerous. So hence this could be a procedure to identify the cancerous tissue by counting number of cells .
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3. Cancerous tissue is composed of cells undergoing uncontrolled, rapid cell division. How could you develop...
Cell Division The fraction of cells in a population that are undergoing mitosis (the mitotic index)...
Cell Division The fraction of cells in a population that are undergoing mitosis (the mitotic index) is a convenient way to estimate the length of the cell cycle. You have decided to measure the cell cycle in the kidney of the adult badger by measuring mitotic index. Accordingly, you have prepared kidney sections obtained from unfortunately road-killed badgers collected from Wisconsin. You stained the cells in the sections to make cells in mitosis easy to see. After 3 days of...
Explain how the abnormal cell division of cancerous cells escapes normal cell cycle controls.
Explain how the abnormal cell division of cancerous cells escapes normal cell cycle controls.
Question 3: . I In some breast cancers, the cancerous cells express the receptor for progesterone....
Question 3: . I In some breast cancers, the cancerous cells express the receptor for progesterone. Progesterone's structure is shown below. When progesterone is present, the progesterone receptor acts like a transcription factor and enhances the transcription of many genes, including c-myc. c-myc makes a protein that promotes cell division. Imagine that in some of these cancers the progesterone receptor has mutated so that it does not o require progesterone to bind to DNA. A. Is the progesterone receptor located...
BIOS 1705. At-Home Worksheet Cell Division and Cancer (10 points) Name: Below are pictures of cells...
BIOS 1705. At-Home Worksheet Cell Division and Cancer (10 points) Name: Below are pictures of cells in the various phases of mitosis and the cell cycle from plants for Activity 1 and animal cells for Activity 2. They are in either interphase, prophase, metaphash, anaphase, telophase or cytokinesis. On the line under the picture indicate which phase each cell is in Activity 1 Mitosis in Plant cells -- Onion Root Tip Add-ins Media Links Activity 2 Observing Mitosis in Animal...
answer this pls asap PART 1: How Long Do Cells Spend in Each stage of Mitosis?...
answer this pls asap
PART 1: How Long Do Cells Spend in Each stage of Mitosis? In this activity, you will be presented with cells from the tip of an onion root. You will classify each cell based on what phase it is in. At the end you will count up the cells found in each phase and use those numbers to predict how much time a dividing cell spends in each phase. You can base your calculation on a...
The vesicles that form between the two plant daughter cells are small buttles of phospholipid membrane...
The vesicles that form between the two plant daughter cells
are small buttles of phospholipid membrane formed by the Golgi
apparatus . When these vesicles fuse , what do they become? HINT:
The bubbles are made of phospholipids.
And please fill the table in the picture.
Procedure 8.5 ESTIMATE THE TIME ELAPSED DURING THE PHASES OF MITOSIS Do all phases of the cell cycle require the same amount of time? The answer can be found by counting the number of...
2. In wh o were most of the onion roat tp 7 Based on what you...
2. In wh o were most of the onion roat tp 7 Based on what you know about all oyole division, what does this imply about the life span of noel? 3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell oyale? 4. As a cell grows, what happens to its surface area to volume ratio? (Hint Think of a balloon being blown up). How does...
3. What kinds of genes are mutated in cancerous cells 4. About how many mutations does...
3. What kinds of genes are mutated in cancerous cells 4. About how many mutations does a typical cell suffer before it becomes cancerous? 5. How do genes get mutated? 6. How can cancer be hereditary? 7. What are the four categories of harm cancer can cause? Are all tumors cancerous? What particular quality must a tumor have to be considered 8. cancerous? 9. Which three cancers have especially effective screening exams? 10. What are the three treatment modalities for...
72. Looking into your microscope, vou spot an unusual coll Instead of the typical rounded cell...
72. Looking into your microscope, vou spot an unusual coll Instead of the typical rounded cell shape, the cen dcell shape, the cell has a very narrow middle separating two bulging ends. It sort of looks like the number or to this cell is two buiging ends. It sort of looks like the number 81 You realize that A) undergoing cytokinesis. C) in the G1 phase of interphase. B) in the S phase of interphase. D) about to undergo mitosis....
Can you please help me with this problem: 3. Sketch a cell where N=4 (3 pts),...
Can you please help me with this problem:
3. Sketch a cell where N=4 (3 pts), and answer the following: a. Can this cell do mitosis? If so, describe the outcome in terms of the number of cells, their ploidy and their chromosome number. If not, explain why. b. Can this cell do meiosis? If so, describe the outcome in terms of the number of cells, their ploidy and their chromosome number. If not, explain why. 4. Assume you have...
Question 3: . I In some breast cancers, the cancerous cells express the receptor for progesterone. Progesterone's structure is shown below. When progesterone is present, the progesterone receptor acts like a transcription factor and enhances the transcription of many genes, including c-myc. c-myc makes a protein that promotes cell division. Imagine that in some of these cancers the progesterone receptor has mutated so that it does not o require progesterone to bind to DNA. A. Is the progesterone receptor located...
BIOS 1705. At-Home Worksheet Cell Division and Cancer (10 points) Name: Below are pictures of cells in the various phases of mitosis and the cell cycle from plants for Activity 1 and animal cells for Activity 2. They are in either interphase, prophase, metaphash, anaphase, telophase or cytokinesis. On the line under the picture indicate which phase each cell is in Activity 1 Mitosis in Plant cells -- Onion Root Tip Add-ins Media Links Activity 2 Observing Mitosis in Animal...
answer this pls asap
PART 1: How Long Do Cells Spend in Each stage of Mitosis? In this activity, you will be presented with cells from the tip of an onion root. You will classify each cell based on what phase it is in. At the end you will count up the cells found in each phase and use those numbers to predict how much time a dividing cell spends in each phase. You can base your calculation on a...
The vesicles that form between the two plant daughter cells
are small buttles of phospholipid membrane formed by the Golgi
apparatus . When these vesicles fuse , what do they become? HINT:
The bubbles are made of phospholipids.
And please fill the table in the picture.
Procedure 8.5 ESTIMATE THE TIME ELAPSED DURING THE PHASES OF MITOSIS Do all phases of the cell cycle require the same amount of time? The answer can be found by counting the number of...
2. In wh o were most of the onion roat tp 7 Based on what you know about all oyole division, what does this imply about the life span of noel? 3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell oyale? 4. As a cell grows, what happens to its surface area to volume ratio? (Hint Think of a balloon being blown up). How does...
3. What kinds of genes are mutated in cancerous cells 4. About how many mutations does a typical cell suffer before it becomes cancerous? 5. How do genes get mutated? 6. How can cancer be hereditary? 7. What are the four categories of harm cancer can cause? Are all tumors cancerous? What particular quality must a tumor have to be considered 8. cancerous? 9. Which three cancers have especially effective screening exams? 10. What are the three treatment modalities for...
72. Looking into your microscope, vou spot an unusual coll Instead of the typical rounded cell shape, the cen dcell shape, the cell has a very narrow middle separating two bulging ends. It sort of looks like the number or to this cell is two buiging ends. It sort of looks like the number 81 You realize that A) undergoing cytokinesis. C) in the G1 phase of interphase. B) in the S phase of interphase. D) about to undergo mitosis....
Can you please help me with this problem:
3. Sketch a cell where N=4 (3 pts), and answer the following: a. Can this cell do mitosis? If so, describe the outcome in terms of the number of cells, their ploidy and their chromosome number. If not, explain why. b. Can this cell do meiosis? If so, describe the outcome in terms of the number of cells, their ploidy and their chromosome number. If not, explain why. 4. Assume you have...
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