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
Lab ideas
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)
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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.
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"
- Interphase
- Prophase
- Metaphase
- Anaphase
- Telophase
| Lecture slides: Mitosis |
| 10._dna_replication_lecture_slides_2023.pptx |
| Lecture Slides: Cell Cycle - Meiosis.pptx |
Homework handouts
| 5.1._cell_cycle_homework_questions.docx |
| "Meiosis Made Easy" homework.docx |
| 00._bacterial_flagellum_assgmt.docx |
| 0._eukaryotic_cell_cycle_and_cancer_weblab instructions.docx |
HeLa Cells case study
| henrietta_lacks_case_study_ |