copyright cmassengale

copyright cmassengale
Cell Reproduction Prokaryotes Bacteria Eukaryotes Plants & animals copyright cmassengale

Prokaryotes Lack a nucleus Have a single chromosome Reproduce by binary fission Include bacteria copyright cmassengale

Binary Fission of Bacterial Cell
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E. Coli Dividing by Binary Fission

Eukaryotes Cell cycle- complete life of the cell copyright cmassengale

Cell Cycle Stages in growth & division G1 Phase S Phase G2 Phase M phase -mitosis Cytokinesis copyright cmassengale

Interphase First Part G1 Phase
First growth stage Cell increases in size Cell prepares to copy its DNA copyright cmassengale

2nd part of Interphase: Synthesis Phase
Copying of all of DNA’s instructions Chromosomes duplicated copyright cmassengale

Third part of Interphase G2 Phase
Time between DNA synthesis & mitosis Cell continues growing Needed proteins produced copyright cmassengale

M-phase mitosis Cell growth stop Cell’s energy used to make 2 daughter cells Called mitosis copyright cmassengale

Interphase copyright cmassengale

Stages of Mitosis Prophase Metaphase Anaphase Telophase copyright cmassengale

Cells Undergoing Mitosis

Prophase Chromosomes become visible Nuclear membrane disappears Nuceolus disappears Spindle begins to form copyright cmassengale

Human Chromosomes copyright cmassengale

Metaphase Chromosomes line up on the equator. copyright cmassengale

Metaphase copyright cmassengale

Anaphase Cell chromosomes are separated Spindle fibers shorten so chromosomes pulled to ends of cell copyright cmassengale

Anaphase copyright cmassengale

Telophase Separation of chromosomes completed Nucleus & nucleolus reform Chromosomes uncoil copyright cmassengale

Telophase Plant Animal copyright cmassengale

Cytokinesis Occurs after chromosomes separate Forms two, identical daughter cells copyright cmassengale

Cytokinesis Cell Plate Forming in Plant Cells copyright cmassengale

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