Section 3: Cells and the Cell Cycle - Part D

Review Cell Cycle | Review Meiosis

The Cell Cycle:

an ordered set of events, culminating in cell growth and division into two daughter cells.

Watson and Crick proposed the double helix model for the DNA molecule in 1953

click to find the answer to today's question What is a gamete?

cell cycle diagram Parts of the cell cycle: link to an Internet Website link to an Internet Website

Interphase: is broken into G1, S, G2

G1 phase: link to a local picture


DNA condenses into Chromosomes S phase: G2 phase: Mitosis: link to a local picture link to an Internet Website    ***Watch this animation: Mitosis & Cytokinesis link to an Internet Website ****
The process by which the DNA is divided into two identical sets before the cell divides.
  1. Prophase link to a local picture
    • Early prophase: chromatin coils to form chromosomes, nuclear membrane disappears, and centrioles migrate to opposite poles of the cell.
    • Middle prophase: spindle fibers, microtubules of protein, begin developing.
      • Polar fibers extend across the cell from centriole to centriole.
      • Kinetochore fibers extend from the centromeres of a chromosome to the centrioles.
    • Late prophase: protein fibers called asters radiate from each centriole in animal cells.
  2. Metaphase: link to a local picture
    • Kinetochore fibers move the chromosomes to the equator of the cell.
  3. Anaphase: link to a local picture
    • The centromere of each pair of chromatids divides, the chromatids separate and are pushed to opposite poles of the cell by the combined efforts of the spindle fibers. This movement is done in one quick motion.
  4. Telophase: link to a local picture
    • All spindle fibers disappear, chromatids unwind and stretch to form chromatin, and a nuclear membrane forms around each mass of chromatin.
Cytokinesis:

In any growing tissue, cells will be found in all phases of the cell cycle. link to a local picture

Assignment 1.3d - Cells and the Cell Cycle
Scoring Rubriclink to a local webpage
Word doc version link to a local webpage

Part I

PowerPoint is a "presentation graphics" program. It is used to visually provide information to a group of people - not just one person sitting in front of a computer. Color combinations and font size must make the slides easily read from a distance.

Make a PowerPoint presentation that you will use to teach the class about the Cell Cycle.  Be prepared to show your power point to the class and teach them about your topic. The requirements below are provided as a minimum standard. Feel free to make a more complex slide show if you wish (higher scores can be earned by adding items like music, animation and video, etc). Your slide show should include the following:

Section 3, part e: Cells and the Cell Cycle

 

Meiosis:  link to an Internet Website occurs only in gametes: gametes are sex cells

 

 

 

 

 

 

 

 

 

 

Meiosis animation: link to an Internet Website     

Practice assembling the stages in Meiosis: link to an Internet Website

Compare and contrast Mitosis & Meiosis

It is the process of nuclear division that reduces the number of chromosomes by half.

 

Assignment 1.3e - Cells and the Cell Cycle


Part I

Scoring Rubriclink to a local webpage Word doc version link to a local webpage

Make a PowerPoint presentation that you will use to teach the class about Meiosis.  Be prepared to show your power point to the class and teach them about your topic. The requirements below are provided as a minimum standard. Feel free to make a more complex slide show if you wish (higher scores can be earned by adding items like music, animation and video, etc). Your slide show should include the following:

Slide (1) - Title page including:

Slide (2) - An introduction slide showing an overview of Meiosis.

Slide (3) - Describe the special location and purpose of meiosis. (may take more then one slide)

Main body Slides (6-10) - Includes information and graphics on the Meiosis process in the correct order.
(important: do not overload one slide with to much information split it up on different slides).

Meiosis I

Meiosis II

Concluding slide (s) - Restates the overall importance and process of the meiosis.

Work cited slide - Site all sources used to make presentation (must have at least two sources)

Important: Use scoring rubric to self evaluate power point.

Presentation day:

 

Student example: Meiosis

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Part II

  1. Use your online text link to an Internet Website to reinforce your understanding of sexual reproduction and the meiosis process. Complete this handout link to a local webpage (word version) (pdf version) while viewing the animations and information provided by your online text.
  1. Complete this online lab link to a local webpage (word version) (pdf version) using your online text: Thinking as a Scientist: How is Crossing Over Measured in the Fungus Sordaria?

  2. View this video on meiosis and gamete formation then view this video quiz, write down the questions and your answer. Bring the complete video quiz to class tomorrow.

  3. Use the online biology text, chapter 8 meiosis bioflix to review your knowledge of meiosis while you complete this handout link to a local webpage.

  4. Listen to this meiosis mp3 while you complete this handout link to a local webpage.

  5. Review your understanding of the diagrams associated with Meiosis by filling in these diagrams link to a local webpage  (use the ebook on the text web page).


 

 

Research Links:

 

                          Biology Class Cell Page

 

 

 

 

 

 

 

   

 

Gametes are sex cells, sperm and egg.