What is a chromosome? How many chromosomes are in humans? 2.- What are the phases of the cell cycle? Why are important? 3.- a: What is the interphase ? b: Please explain the phases of the interphase. 4.- Why the cells are capable to maintain the homeostasis? 5.- Please name the organelles in the cell, and explain Golgi Apparatus, and Nucleolus: __________________.

What is a chromosome? How many chromosomes are in humans? 2.- What are the phases of the cell cycle? Why are important? 3.- a: What is the interphase ? b: Please explain the phases of the interphase. 4.- Why the cells are capable to maintain the homeostasis? 5.- Please name the organelles in the cell, and explain Golgi Apparatus, and Nucleolus: __________________.

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter3: The Cellular Level Of Organization

Section: Chapter Questions

Problem 5ILQ: Visit this link (http://openstaxcollege.org/l/mitosis) to learn about mitosis. Mitosis results in...

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1) what is meant by “there is no such thing as a typical cell?” 2) which part of the cell cycle does the cell spend the least amount of time in? Why do u think that is? 3) why would a cell ever want to destroy itself? 4) how long does a cell live before it undergoes mitosis? 5) if cells can constantly replace themselves, why is a heart attack (which kills cardiac muscle cells) so devastating? 6) what type of cells never undergo mitosis? 7) what makes stem cells particularly interesting to researchers? 8) how might stem cells be used to repair brain or heart damage, even though these cells do not undergo mitosis? 9) why do you think beauty experts would also be interested in stem cells? 10) what is the connection between cancer and mitosis? 11) why is it so difficult for your body to battle cancer? 12) why does you hair fall out of the chemotherapy?
Which stage of the cell cycle is the longest? Why are onion root tips a good choice for viewing cells in different stages of the cell cycle? Are there any mammalian cells that would be a good source for dividing cells? What types of cells would most like NOT have cells undergoing division?
1.What is mitosis? cytokinesis? 2. Why is mitosis important to living organism? Cite three specific importance of this process in human. 3. How does mitosis maintain the chromosome number of species? 4. What is the difference between plant and animal mitosis? 5. In what case does mitosis become detrimental or fatal to human? Cite a concrete example.
Does resulting daughter cells in mitosis and meiosis will have identical features with their parent cell? Why? Does Interphase prepare the parent cell for division by means of cell growth and synthesis? Why? Does the number of chromosomes found in the daughter cells after mitosis and meiosis will be the same as that of the parent cell? Why? 5 sentences each.
In the mitosis experiment, in what stage were most of the onion root tip cells in? Based on what you know about cell cycle division, what does this imply about the life span of a cell? Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle?
1. Why is mitosis important to living organism? Cite three specific importance of this process in human. 2. How does mitosis maintain the chromosome number of species? 3. What is the difference between plant and animal mitosis? 4. In what case does mitosis become detrimental or fatal to human? Cite a concrete example.
1.Meiosis results in how many more daughter cells than mitosis? 2. Which type of cell division involves ripping "double" chromosomes into "single" chromosomes? 3. Sarah inherits a new mutation from her mother. During which stage of cell division did the mutation likely occur? 4. The nuclear membrane dissolves during which stage?
Speculate about the following details of mitosis. 1. Why do chromosomes need to condense during mitosis? 2. Why does the nuclear membrane need to break down at the beginning of prometaphase? 3. Why do chromosomes congress (migrate) toward the metaphase plate during metaphase, and what forces keep the chromosomes there until anaphase begins? 4. What would happen if one kinetochore of one chromosome failed to attach to the spindle and the cell entered anaphase? In a general sense, how do cells normally prevent this situation? 5. During late anaphase and telophase, animal cells elongate to aid the eventual separation of the two daughter cells in cytokinesis. This elongation can occur even in cell suspensions, where different cells do not come into contact. Are the forces that elongate the cell likely to be pushing forces or pulling forces, and where do these forces come from?
A biologist examines a series of cells and counts 160 cells in interphase, 20 cells in prophase, 6 cells in prometaphase, 2 cells in metaphase, 7 cells in anaphase, and 5 cells in telophase. If the complete cell cycle requires 24 hours, what is the average duration of the M phase in these cells? Of metaphase?
Answer these questions: 1. During what phase of the cell cycle does DNA replication occur? 2. During mitosis, at what phase do chromosomes first become visible? 3. During what 2 phases of mitosis are chromosomes each composed of two chromatids? 4. During what 2 phases of mitosis are chromosomes each composed of one chromatid? 5. How does cytokinesis differ in plants and animals? 6. What is the term used to refer to the "division of the cytoplasm"? 7. Are the two cells created from mitosis the genetically identical or different? 8. Write the stages of the cell's life cycle in order, starting with the stage immediately after cytokinesis.
Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely? If the DNA content of a DIPLOID cell in the G1 phase of the cell cycle is represented by 'x. then the DNA content of the same cell at metaphase of MElosIs I would be? 3.Cell A has half as much DNA as cells B. C. and D in a mitotically active tissue. Cell A is likelv in? 4. Which of the following is a recessive trait © Polydactyly © Albinism © Huntington Disease Juvenile glaucoma O None are correct
1) What phase of mitosis is this? Answer: 2) What is the indicated structure 1? select one. a. chromosome b. chromosome with two sister chromatids c. centrioles/centrosome d. spindle fibres e. metaphase plate 3)If the diploid (2n) number of this cell is 8 how many chromosomes are present? 4) If the diploid (2n) number of this cell is 8 how many sister chromatids are present? 5) If the diploid (2n) number of this cell is 8 how many homologous pairs are present?