Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 16.2, Problem 2CC
Mitotic Cell Division
Concept Check: What are the similarities and differences between animal and plant cells with regard to cytokinesis?
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What molecular mechanisms operate to ensure that once the decision to advance through the restriction point has been made, this leads to an essentially irreversible commitment to complete the remaining phases of the cell cycle through M phase?
Objective: To review the phases of mitosis with the understanding that in a real tissue or a non-synchronized cell culture, different mitotic phases and cells in interphase will be observed at a certain time.
Interphase is the period between mitotic events; all other phases are part of mitosis and their individual probabilities add up to the total probability of seeing cells undergoing mitosis.
Pay attention to the individual probabilities for cells in each phase of the cell cycle.
Problem N° 10
For a certain type of animal tissue, the probability of a randomly selected cell being in a particular stage of the interphase/mitosis cycle is given by the following table:
Stage
Probability
Interphase
0.5
Prophase
0.1
Metaphase
0.05
Anaphase
0.2
Telophase
0.15
Suppose you examine 100 cells at random from this tissue.
A) How many cells do you expect to see in metaphase? _____ cells
B) You have selected a high magnification (2000 X) in your…
Cell Cyle and Checkpoints Story Make a creative
short story about the phases of cell cycle and its
checkpoints. Highlight each function of the
checkpoints and the characteristics of the cell during
the different stages of the cycle.
Chapter 16 Solutions
Biology
Ch. 16.1 - Researchers usually treat cells with drugs that...Ch. 16.1 - Which phases make up interphase?Ch. 16.1 - Prob. 1CSCh. 16.1 - Prob. 1EQCh. 16.1 - The Eukaryotic Cell Cycle CoreSKILL What...Ch. 16.1 - Prob. 3EQCh. 16.2 - Prob. 1CCCh. 16.2 - Mitotic Cell Division Concept Check: What are the...Ch. 16.3 - Core Skill: Modeling The goal of this modeling...Ch. 16.4 - Sexual Reproduction Concept Check: What is the...
Ch. 16.5 - Variation in Chromosome Structure and Number...Ch. 16 - Prob. 1TYCh. 16 - Prob. 2TYCh. 16 - Prob. 3TYCh. 16 - Prob. 4TYCh. 16 - Prob. 5TYCh. 16 - Which of the following is not an event of anaphase...Ch. 16 - Prob. 7TYCh. 16 - Which of the following statements accurately...Ch. 16 - Prob. 9TYCh. 16 - Aneuploidy may be the result of a. duplication of...Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 1COQCh. 16 - A diploid eukaryotic cell has 10 chromosomes (5...
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- VISUALIZE Sketch a roughly cuboidal cell preparing to divide. Indicate the orientation of the preprophase band and the site where the new cell walls of the daughter cells will form.arrow_forwardQuestion 5 Review Concept 12.2 Phases of Cell Cycle. Match the term and its description. Each term can only be used once. Chromosomes are duplicated during this phase. [ Choose ) Mitosis and cytokinesis are parts of this phase called [ Choose ) The life of a cell from formation to its own division is called [ Choose ) > >arrow_forwardApply Evolutionary Thinking The genes and proteins involved in cell cycle regulation in prokaryotes and eukaryotes are very different. However, both types of organisms use similar molecular regulatory reactions to coordinate DNA synthesis with cell division. What does this observation mean from an evolutionary perspective?arrow_forward
- Question 5 Describe briefly the TWO distinct roles of the v-SNARE and t-SNARE proteins in vesicle transport. O They generate mechanical forces needed for budding the vesicles O They provide mechanical forces needed for transporting vesicles in the cytosol O They provide specificity by matching particular membrane compartments O They hydrolyze GTP to allow vesicles to pinch off a membrane compartment O They generate mechanical forces needed for fusing different membrane compartments O They enable vesicle cargo to be concentrated with its receptorarrow_forwardCell Cycle: Mitosis The Cell Cycle and M Mitosis Worksheet The diagram below shows six cells in various phases of the cell cvcle. Note the cells are not arranged in the order in which mitosis occurs . Use the diagram to answer questions 1-5 Phases of the Cell Cycle A B How can you tell which diagram(s) is/are the end of the cell division? What are structures seen inside the nucleus? Are the cells depicted plant or animal cells? Explain your answer. 4. Use the diagram, at the bottom of your answer sheet, draw the phases/ stages of the cell cycle and arrange them in a correct sequence. 5. Why is mitosis important? Give at least 2 reasons. 37:09 / 38:01 5224arrow_forwardWHAT IF? What might be the resultif the cell ignored either checkpoint andprogressed through the cell cycle?arrow_forward
- TELOPHASE This stage shows the end of Telophase AFTER cytokinesis has occurred • Nuclear membrane reformed in each cell • Nucleolus reformed in each cell • Centrioles present in cells at one end Two new daughter cells with same # of chromosomes: 46 single stranded chromosomes in each nucleus Daughter Cell Diploid cell 2n = Daughter cell Diploid cell 2n =arrow_forwardQuestion: How many chromosomes were present before mitosis? How many chromosomes did each of the daughter cells contain after mitosis? Cite an example of a type of cell that undergoes mitosis. Why is it important for each daughter cell to contain information identical to the parent cell? Human skin cells divide at a higher rate than neurons (nerve cells). Hypothesize why this may be. Hypothesize what would happen if the sister chromatids did not split equally during anaphase of mitosis.arrow_forwardMODEL 1: M-phase checkpoint G2 checkpoint 1. Consider each of the cells described below and predict at which stage of the cell cycle (G1, S, G2, M, or GO) they are currently in Mitosis A newly generated daughter cell G1 A cell that is actively using DNA polymerase A cell with fully condensed chromosomes A mature, functioning neuron (Hint: It will never divide again) G, checkpoint A cell with uncondensed, replicated chromosomes DNA Synthesisarrow_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_forwardQuick help!!! Answer the following questions Only in cell biology 1. A. Discuss the roles of two main types of genes that are critical in cancer? B. What is the difference between a totipotent and a pluripotent stem cell? Give an example to each.arrow_forwardring 2022 Cell Cycle: Sequence of Events ome The circle represents the life cycle of a cell from its beginning to when it divides into two daughter cells. Match the name of each stage with its number, 1 though 5, in the Fades cell life cycle diagram. Each answer choice is used once and only once. odules om tgers Libraries 11 udent Instructional ting Survey 1 р. Hat 19 4 Stage 1 Choose 2. 5 (interphase in paie coll)arrow_forward
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