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Energy Transformations - PowerPoint PPT Presentation


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Energy Transformations. Adenosine Triphosphate. Adenine Ribose 3 Phosphates. Plant cell—photosynthesis . Chloroplast. photosynthesis. Energy transformation for photosynthesis. Light energy to chemical energy. Animal cell—respiration (all cells too). Mitochondria.

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Presentation Transcript
adenosine triphosphate
Adenosine Triphosphate
  • Adenine
  • Ribose
  • 3 Phosphates
energy transformation for photosynthesis
Energy transformation for photosynthesis
  • Light energy to chemical energy
energy transformation for cellular respiration
Energy Transformation for Cellular Respiration
  • Chemical energy to chemical energy
cell cycle
Cell cycle
  • Interphase
    • G1
    • S
    • G2
  • Mitosis
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
  • Cytokinesis
interphase
Interphase
  • Period of growth, normal cell functioning
mitosis
Mitosis
  • Makes two cells that are genetically identical
  • Makes body/somatic cells
  • Are diploid
slide17

Prophase

    • Chromatin coils up into visible chromosomes
    • Nuclear membrane disappears
    • Spindle fibers appear.
  • Metaphase
    • Chromosomes line up in the middle of the cell.
  • Anaphase
    • Spindle fibers pull the chromosomes apart , attached at the centromeres.
  • Telophase
    • Chromosomes uncoil back in to chromatin
    • Spindle disappears
    • Nuclear membranes re-appear around each set of chromosomes.
meiosis
Meiosis
  • Results in 4 cells that are genetically different from each other
  • Makes sperm & eggs
  • Are haploid
slide19

Prophase I

    • Chromatin coils up into visible chromosomes
    • Nuclear membrane disappears
    • Spindle fibers appear.
    • Chromosomes pair up in

2 homologous pairs called tetrads

    • Crossing over occurs.
slide20

Metaphase I

    • Tetrads line up in the middle of the cell.
  • Anaphase I
    • Tetrads are separated from each other into homologous pairs
  • Telophase I
    • Two nuclear membranes formed
  • Prophase II, Metaphase II, Anaphase II
    • Same processes repeat in both cells. This time, the homologues are split into separate chromosomes.
  • Telophase II
    • Chromosomes uncoil back in to chromatin
    • Spindle disappears
    • Nuclear membranes re-appear around each set of chromosomes.
    • Four new cells are formed!