Cell Cycle Stages in growth division G 1
- Slides: 23
Cell Cycle Ø Ø Ø Stages in growth & division G 1 Phase S Phase G 2 Phase M Phase Cytokinesis copyright cmassengale
G 1 Phase Ø First growth stage Ø Cell increases in size Ø Cell prepares to copy its DNA copyright cmassengale
Synthesis Phase Ø Copying of all of DNA’s instructions Ø Chromosomes duplicated copyright cmassengale
G 2 Phase Ø Time between DNA synthesis & mitosis Ø Cell continues growing Ø Needed proteins produced copyright cmassengale
M Phase Ø Cell growth & protein production stop Ø Cell’s energy used to make 2 daughter cells Ø Called mitosis or karyokinesis (nuclear division) copyright cmassengale
Life Cycle of a Cell Mitosis is a cycle with no beginning or end. copyright cmassengale
Interphase – Resting Stage Ø Cells carrying on normal activities Ø Chromosomes aren’t visible Ø Cell metabolism is occurring Ø Occurs before mitosis copyright cmassengale
Interphase copyright cmassengale
Stages of Mitosis Ø Prophase Ø Metaphase Ø Anaphase Ø Telophase copyright cmassengale
Cells Undergoing Mitosis copyright cmassengale
Steps in Prophase Ø DNA coils tightly & becomes visible as chromosomes Ø Nuclear membrane disappears Ø Nuceolus disappears Ø Centrioles migrate to poles Ø Spindle begins to form copyright cmassengale
Prophase copyright cmassengale
Eukaryotic Chromosome copyright cmassengale
Human Chromosomes copyright cmassengale
Steps in Metaphase Ø Spindle fibers from centrioles attach to each chromosome Ø Cell preparing to separate its chromosomes Ø Cell aligns its chromosomes in the middle of the cell copyright cmassengale
Metaphase copyright cmassengale
Steps in Anaphase Ø Cell chromosomes are separated Ø Spindle fibers shorten so chromosomes pulled to ends of cell copyright cmassengale
Mitotic Spindle copyright cmassengale
Anaphase copyright cmassengale
Steps in Telophase Ø Separation of chromosomes completed Ø Cell Plate forms (plants) Ø Cleavage furrow forms(animals) Ø Nucleus & nucleolus reform Ø Chromosomes uncoil copyright cmassengale
Telophase Plant copyright cmassengale Animal
Cytokinesis Ø Occurs after chromosomes separate Ø Forms two, identical daughter cells copyright cmassengale
Cytokinesis Cell Plate Forming in Plant Cells copyright cmassengale
- Section 10-2 cell division
- Cell cycle and cell division
- Cell cycle chart
- Section 8-2 cell division
- Cell growth division and reproduction
- Four stages of cell cycle
- Cell cycle label
- Biology.arizona.edu/cell bio/activities/cell cycle/01.html
- What is plant growth analysis
- Monocots eudicots
- Carothers equation
- Primary growth and secondary growth in plants
- Chapter 35 plant structure growth and development
- Geometric exponential growth
- Neoclassical growth theory vs. endogenous growth theory
- Difference between organic and inorganic growth
- Feekes growth stages
- Lettuce growing stages
- Five stages of economic growth
- Social changes in adulthood
- Soybean growth stages
- Rostows stages of growth
- Stages of human growth and development pictures
- Tillering stage of rice