Cell cycle reproduction lecture with turning point
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Cell cycle reproduction lecture with turning point

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  • What happens in animal cells? Clevage furrow

Cell cycle reproduction lecture with turning point Cell cycle reproduction lecture with turning point Presentation Transcript

  • 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 n o beginning or end .
  • How do prokaryotes reproduce?
    • Mitosis
    • Meiosis
    • Binary Fission
    • Sexual Reproduction
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Prokaryotes have:
    • Mitochondria
    • Chloroplasts
    • Nucleus
    • All of the above
    • None of the above
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Eukaryotes reproduce asexxually by:
    • Mitosis
    • Meiosis
    • Binary Fission
    • Binary Fusion
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • What happens in the G1 phase of the cell cycle?
    • Cell growth
    • Cell division
    • Chromsome duplication
    • DNA synthesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • What happens in the G2 phase of the cell cycle?
    • DNA synthesis
    • Cell division
    • Chromsome duplication
    • Protein Production
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • What happens in the M phase of the cell cycle?
    • DNA synthesis
    • Cell growth
    • Chromsome duplication
    • Makes 2 new cells
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Interphase – Resting Stage (Not Really)
    • Cells carrying on normal activities
    • Chromosomes aren’t visible
    • Cell metabolism is occurring
    • Occurs before mitosis
  • Interphase
  • 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
  • Prophase
  • Eukaryotic Chromosome
  • Human Chromosomes
  • 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
  • Metaphase
  • Steps in Anaphase
    • Cell chromosomes are separated
    • Spindle fibers shorten so chromosomes pulled to ends of cell
  • Mitotic Spindle
  • Anaphase
  • 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
  • Which of the following describes interphase?
    • Chromosomes line up in the middle
    • Chromosomes aren’t visible
    • Chromosomes are pulled apart
    • Chromosomes cross over
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • The nucleus reforms in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Chromosomes become visible in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Centrioles migrate to the poles in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Chromosomes separate in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Spindle fibers attach to chromsomes in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • The nuclear membrane disappears in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • The formation of 2 new identical daughter cells
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Chromosomes line up in the middle in:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Enter question text...
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • Cell plates form in plants during:
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30