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Cell Reproduction Prokaryotes Bacteria Eukaryotes Plants & animals
Prokaryotes Lack a nucleus Have a single chromosome Reproduce by binary fission Include bacteria
Steps in Binary Fission Used by bacteria Cells increase their cell mass slightly DNA & cell components are replicated Each cell divides into 2 daughter cells
Binary Fission of Bacterial Cell
E. Coli Dividing by Binary Fission
Eukaryotes Contain a nucleus & membrane bound organelles Asexually reproduce cells by mitosis
Cell Cycle Stages in growth & division G1 Phase S Phase G2 Phase M Phase Cytokinesis
G1 Phase First growth stage Cell increases in size Cell prepares to copy its DNA
Synthesis Phase Copying of all of DNA’s instructions Chromosomes duplicated
G2 Phase Time between DNA synthesis & mitosis Cell continues growing Needed proteins produced
M Phase Cell growth & protein production stop Cell’s energy used to make 2 daughter cells Called mitosis or karyokinesis (nuclear division)
Life Cycle of a Cell Mitosis is a cycle with no beginning or end.
Interphase – Resting Stage Cells carrying on normal activities Chromosomes aren’t visible Cell metabolism is occurring Occurs before mitosis
Stages of Mitosis Prophase Metaphase Anaphase Telophase
Cells Undergoing Mitosis
Steps in Prophase DNA coils tightly & becomes visible as chromosomes Nuclear membrane disappears Nuceolus disappears Centrioles migrate to poles Spindle begins to form
Steps in Metaphase Spindle fibers from centrioles attach to each chromosome Cell preparing to separate its chromosomes Cell aligns its chromosomes in the middle of the cell
Steps in Anaphase Cell chromosomes are separated Spindle fibers shorten so chromosomes pulled to ends of cell
Steps in Telophase Separation of chromosomes completed Cell Plate forms (plants) Cleavage furrow forms(animals) Nucleus & nucleolus reform Chromosomes uncoil
Telophase Plant Animal
Cytokinesis Occurs after chromosomes separate Forms two, identical daughter cells
Cytokinesis Cell Plate Forming in Plant Cells
10.2 The Process of Cell Division
1 Review What are chromosomes Compare and Contrast How does the structure of chromosomes differ in prokaryotes and eukaryotes 2 Review What happens during.
CELL DIVISION Unit 3 Part 2 – The Cell. Cell Cycles No nucleus No membrane bound organelles (ex. mitochondria, vacuole, chloroplast) A.) Cell division.
Section 10.2 (Pg ): The Process of Cell Division
Cell Growth and Division
Cell Division #1 JEOPARDY S2C06 Jeopardy Review What Phase Is it? Vocabulary Cell Division Picture ID More Vocab
The Cell Cycle and Cell Division
Asexual Reproduction The Cell Cycle 1.
The Cell Cycle and Mitosis
The Cell Cycle: A closer look!
Chapter 10 Cell division Review. This spot that holds the 2 chromatid copies together is called a ______________________ centromere The phase of the cell.
Mitosis and the Cell Cycle Division of the nucleus and the nuclear material (DNA), as well as the cell.
The Cell Cycle. What is the life cycle of a cell? Is it like this? –Birth –Growth & development –Reproduction –Deterioration & Death Or is it like this?
Cell Reproduction Prokaryotes Bacteria Eukaryotes Plants & animals copyright cmassengale.
Karyotype A picture of the chromosomes from a human cell arranged in pairs by size First 22 pairs are called autosomes Last pair are the sex chromosomes.
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