Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 24, Problem 24.1PS
Cell Cycle Phases. Indicate whether each of the following statements is true of the G1 phase of the cell cycle, S phase, G2 phase, or M phase. A given statement may be true of any, all, or none of the phases.
- (a) The amount of nuclear DNA in the cell doubles.
- (b) The nuclear envelope breaks into fragments.
- (c) Sister chromatids separate from each other.
- (d) Cells that will never divide again are likely to be arrested in this phase.
- (e) The primary cell wall of a plant cell forms.
- (f) Chromosomes are present as diffuse, extended chromatin.
- (g) This phase is part of interphase.
- (h) Mitotic cyclin is at its lowest level.
- (i) Cdk proteins do not play a role in this phase.
- (j) A cell cycle checkpoint has been identified in this phase.
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Anaphase- In Mitosis
a) Centromeres divide.
b) Single-stranded chromosomes (now consisting of one DNA molecule each) are pulled to opposite poles by the spindle fibers. – third stage of mitosis
Let’s model mitosis. Focus on drawing the cell nucleus taking care to model the number and location of chromosomes. Although the chromosomes are only visible in each stage, draw them in all stages for clarity sake.
Draw a 2n=4 cell at G1 of interphase.
Draw the same cell at the start of prophase.
Draw the same cell at metaphase.
Draw the cell(s) that result at the end of cytokinesis.
You can draw this out on paper
Let’s model mitosis. Focus on drawing the cell nucleus taking care to model the number and location of chromosomes. Although the chromosomes are only visible in each stage, draw them in all stages for clarity sake.
Draw a 2n=4 cell at G1 of interphase.
Draw the same cell at the start of prophase.
Draw the same cell at metaphase.
Draw the cell(s) that result at the end of cytokinesis.
Chapter 24 Solutions
Becker's World of the Cell (9th Edition)
Ch. 24 - Prob. 1QCh. 24 - Which DNA sequences are more alike: a pair of...Ch. 24 - Suppose you treat rapidly dividing tissue culture...Ch. 24 - Cyclin D is part of the G1 Cdk-cyclin complex....Ch. 24 - Both EGF (a mitogen) and TGF (when acting as an...Ch. 24 - A knockout mouse has been produced using the...Ch. 24 - Cell Cycle Phases. Indicate whether each of the...Ch. 24 - QUANTITATIVE The Mitotic Index and the Cell Cycle....Ch. 24 - Chromosome Movement in Mitosis. It is possible to...Ch. 24 - Cytokinesis. Predict what will happen in each of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
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- Mitosis and Cell Division – Location 3 Seek out and define: Seek out the best (clearest, most obvious, etc.) example of mitosis or cell division you can find online. Once you have found your image, write a single sentence that explains what's going on in your picture. This picture needs to be really good so don't just choose the first image you find. Be picky and find something that really stands out for full marks. Locate the picture, take a screenshot and upload it to your submission form along with your sentence. If you're not submitting online, show the picture to your teacher.arrow_forwardCell Cycle: Explain how the cell cycle is regulated in eukaryotic cells.arrow_forwardMitosis; Sequence of Stages Number the names of the stages of mitosis from 1 to 5 to show the correct order of their sequence. 1 [Choose ] [ Choose ] Prophase Anaphase Prometaphase Metaphase Telophase TChoose 3 4 [Choose] [Choose]arrow_forward
- Fighting Cancer by Disrupting Mitosis Scientists have identified a number of toxins that disrupt mitosis. These toxins can be used in many different ways – some of them are used during scientific research to arrest the cell cycle at specific points so that the cells can be studied. Others have clinical applications as chemotherapeutic drugs that are useful in the treatment of cancer, as well as other types of disease. Study the list of toxins below, and use the information provided and your understanding of mitosis to answer the questions below. Note: some of these drugs are currently approved for clinical use, while others are still in development. For the purposes of this exercise, assume that all of them are available for use. Drug How it affects mitosis Status of drug Vincristine Prevents polymerization of tubulin Approved Paclitaxel Prevents depolymerization of tubulin and can result in multipolar spindle formation Approved Flavopiridol Blocks Cdk-1. Cdk-1 is a kinase that helps…arrow_forwardMITOTIC In the cell cycle it is necessary for interphase to happen before mitosis and cytokinesis creates 2 identical cells. Why is interphase neccessary? What is 1 major reason that mitosis wouldn't work without interphase happening first? INTERPHASE G, (DNA synthesis) Cytokinesis PHASE (M) G, Ce t (level 1) tv MacBook Air DII 80 FS F4 & 23 $ 9. 7 8 3 4 Y W E J K F C V command option nd ...-arrow_forwardPlease explain the cell cycle in full. Explain what happens at each stage and each checkpoint. For full credit, you must also explain where the chromosomal material is condensed/ decondensed and when protein synthesis is halted and restarted.arrow_forward
- (b) What is the role of microtubules in mitosis? How does vincristine contribute to the cell cycle arrest of cancer cells? Explain. Microtubulesarrow_forward(a) the cell cycle is divided into different phases (referred to as M, G0, G1, S and G2); Can you account for what happens during the different parts of the cycle and out of it is checked? ( b) What is the difference between apoptosis and necrosis? ( c) What are caspases and what is their function in the cell?arrow_forwardBelgy Name: Date: Period: Mitosis Worksheet The diagram below shows six cells in various phases of the cell cycle. Note the cells are not arranged in the order in which mitosis occurs and one of the phases of mitosis occurs twice. Use the diagram to answer questions 1-7. Phases of the Cell Cycle 1) Cells A and early stage of the same phase of mitosis. What phase is it? 2) Which cell is in mg 3) Which cell rst phas sis? 4) In cell A, what structure is labeled X? 5) Which cell is in the "in between" phase of mitosis? 6) Place the diagrams in order from first to last. 7) Are the cells depicted plant animal cells? Explain your answer. 8) What is the longest phase of the cell cycle? 9) Why is mitosis important?arrow_forward
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cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license