Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 47.1, Problem 3CC
MAKE CONNECTIONS → Review Figure 12.16 on cell cycle control. Would you expect MPF (maturation-promoting factor) activity to remain steady during cleavage? Explain.
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Review Figure 12.16 on cell cycle control. Would you expect MPF (maturation-promoting factor) activity to remain steady during cleavage? Explain.
MAKE CONNECTIONS Review Figure 12.16 on cell cyclecontrol. Would you expect MPF (maturation-promotingfactor) activity to remain steady during cleavage? Explain.
Praeuce problem
Using the diagram from the Cell Cycle lesson,
we can practice calculating a mitotic index.
1. Count the number of cells that are in ANY
stage of mitosis (PMAT).
2. Count the total number of cells.
3. Use the Mitotic Index formula to calculate
the mitotic index for this sample.
Cells in mitosis:
# of cells in mitosis is
Total # of cells is
MI= # of cells in any stage of mitosis
MI=
Total number of cells
MI=
Chapter 47 Solutions
Campbell Biology: Custom Edition
Ch. 47.1 - How does the fertilization envelope form in sea...Ch. 47.1 - Prob. 2CCCh. 47.1 - MAKE CONNECTIONS Review Figure 12.16 on cell...Ch. 47.2 - In the frog embryo, convergent extension elongates...Ch. 47.2 - WHAT IF? Predict what would happen if Ca2+ was...Ch. 47.2 - MAKE CONNECTIONS Unlike some other types of birth...Ch. 47.3 - Prob. 1CCCh. 47.3 - Prob. 2CCCh. 47.3 - Prob. 3CCCh. 47.3 - Prob. 4CC
Ch. 47 - What cell-surface event would likely fail if a...Ch. 47 - What are some functions of apoptosis in...Ch. 47 - Suppose you found two classes of mouse mutations,...Ch. 47 - Prob. 1TYUCh. 47 - Which of the following is common to the...Ch. 47 - The archenteron develops into a. the mesoderm. b....Ch. 47 - What structural adaptation in chickens allows them...Ch. 47 - Prob. 5TYUCh. 47 - In humans, identical twins are possible because a....Ch. 47 - Cells transplanted from the neural tube of a frog...Ch. 47 - DRAW IT Each blue circle in the figure below...Ch. 47 - EVOLUTION CONNECTION Evolution in insects and...Ch. 47 - Prob. 10TYUCh. 47 - Prob. 11TYUCh. 47 - Prob. 12TYUCh. 47 - SYNTHESIZE YOUR KNOWLEDGE Occasionally, two-headed...
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- .By what mode of cell division would you expect sperm cells to be formed in the haploid male bee? Explain the possible mechanism. Why is each stage of the cell cycle a prerequisite to the next?arrow_forwardAnaphase: The kinetochore microtubules that make up the spindle begin to shorten, separating the sister chromatids from one another and drawing each to opposite poles of the cell. Polar microtubules assist in this process as they begin to lengthen and push the poles farther from each other. Why is this separation of chromatids necessary?arrow_forwardNeed help fast 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?arrow_forward
- Explain in detail how phosphorylation of retinoblastoma (rb) protein leads to transition of the cell cycle from the G1 phase to the S phase. Be sure to include the role of all relevant accessory proteins, cylcins and CDK’sarrow_forward11:51 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_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_forward
- MAKE CONNECTIONS The gene that is activated onthe Philadelphia chromosome codes for an intracellulartyrosine kinase. Review the discussion of cell cycle controlin Concept 12.3, and explain how the activation of thisgene could contribute to the development of cancer.arrow_forwardA. Cyclin Expression Cycle 1. What are the two factors involve in the illustration Cyclin Expression Cycle? 2. Identify the cyclin fluctuation in every stage of the cell cycle. 3. What do you think is the role of cyclin fluctuation at a given stage of a cell cycle? Concentration G₁ cyclin G₁ Phase Cyclin Expression Cycle G₁/S cyclin S Phase S cyclin M cyclin G2 Phase M Phasearrow_forwardExercise Observe the diagram below and answer the following questions: Image Source: Wikimedia Commons 18₂1)-(²) (Cr)-(1 1. Which process is represented in these diagrams? Mitosis or meiosis? Explain your answer. 2. How many chromosomes did the cell start with? 3. How many chromosomes are present at the end of division I? 4. How many chromosomes are present in each cell at the end of division II? Homologous Chromosomes 5. Explain how meiosis results in UNIQUE cells. 6. Is this cell division occurring in a plant cell or an animal cell? What is the main difference between the two divisions?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_forwardCELL DIVISION ACTIVITY For this activity, you will practice recognizing the steps of mitosis and meiosis. You will start each section with a cell with the same number of chromosomes so you can see the differences that happen as it goes through one process versus the other. Part 1 - Mitosis: Draw the steps of mitosis for a cell that has 8 chromosomes. You do not have to write anything other than to label which step you are showing with each drawing. I mostly want the big 4 steps, but you may include Interphase and Cytokinesis if you want.arrow_forward
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