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  • Home
  • About
  • Classes
    • Biology
    • Chemistry
    • Physics
    • Algebra I
    • Geometry
    • Algebra II
    • Pre-calculus
    • Economics & U.S. Gov
    • Principles of Engineering
    • Human Anatomy & Physiology
    • Business Management
  • SCHEDULE
  • CLASS FEES
  • REFERENCES
  • POLICIES
  • CONTACT

Ch. 5A: The Cell Cycle

Reading
BJU Biology: Ch. 5A - Genes, Chromosomes, and Cell Division
AP Princeton Review: Ch. 7 Cell Communication and the Cell Cycle
​
Topics
  • The cell cycle (I Played My Accordion Today) 
  • DNA replication
  • Mitosis and Meiosis

Lab ideas​​
  • ​Henrietta Lacks Case Study (HeLa cells) 
  • The Eukaryotic Cell Cycle and Cancer weblab. (HHMI) Instructions are posted in the next unit.
  • Karyotyping weblab (Univ. of Arizona) 
  • Pipe cleaner mitosis lab (works very well as a visual aid) 
  • Gene Switches lab (the Lac Operon) 
Picture
Picture
Picture
Picture
The Cell Cycle
Cells divide and multiply. They do this 1) to replace damaged tissues, 2) to replace old worn-out cells, 3) to permit growth of an organism, and 4) to simply replicate themselves, as in the case of bacteria. 

When a cell divides, it must first replicate all its DNA so that each daughter cell receives a complete copy. DNA replication occurs in all living organisms - humans, whales, finches, corn plants, and fruit flies. 

​Copying of the DNA is accomplished by the process of DNA replication - also known as DNA synthesis. This occurs in the S phase of the cell cycle. 

In eukaryotes (humans, pea plants, dolphins, and yeast) DNA replication occurs in the nucleus - after all, that's where the DNA resides. 

In prokaryotes (think: bacteria) DNA replication occurs right out in the cytoplasm itself, because that's where bacterial DNA resides. 
The cell cycle:  "I Played My Accordion Today"
  1. Interphase
  2. Prophase
  3. Metaphase
  4. Anaphase
  5. Telophase
Lecture slides: Mitosis
File Size: 3334 kb
File Type: pdf
Download File

10._dna_replication_lecture_slides_2023.pptx
File Size: 2605 kb
File Type: pptx
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Lecture Slides: Cell Cycle - Meiosis.pptx
File Size: 958 kb
File Type: pptx
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Homework handouts
5.1._cell_cycle_homework_questions.docx
File Size: 18 kb
File Type: docx
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"Meiosis Made Easy" homework.docx
File Size: 18 kb
File Type: docx
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00._bacterial_flagellum_assgmt.docx
File Size: 14 kb
File Type: docx
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0._eukaryotic_cell_cycle_and_cancer_weblab instructions.docx
File Size: 14 kb
File Type: docx
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HeLa Cells case study
henrietta_lacks_case_study_
File Size: 184 kb
File Type: docx
Download File

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