Prokaryote ◦ No nucleus ◦ Unicellular ◦ Example: Bacteria Eukaryote ◦ Nucleus ◦ Complex...
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Transcript of Prokaryote ◦ No nucleus ◦ Unicellular ◦ Example: Bacteria Eukaryote ◦ Nucleus ◦ Complex...
Pro v. Euk Prokaryote
◦ No nucleus◦ Unicellular◦ Example: Bacteria
Eukaryote◦ Nucleus◦ Complex organelles◦ Uni or multicellular◦ Example: Us!
Cell Energy Responsible organelles
◦ Animal cell – mitochondria◦ Plant cell – chloroplast
It’s all about ATP◦ Make it or break it
Organelles Cell membrane –
controls what goes in and out
ER – tubes for transport Lysosome – digestive
enzymes Vacuole – temp. storage Mitochondria – energy! Golgi – repackage stuff Cytoplasm - fluid
Cell Cycle Growth and division of cells IPMAT
◦ Interphase – 80% of the time – DNA copies◦ Prophase◦ Metaphase◦ Anaphase◦ Telophase
Process of cell division resulting in two identical cells (daughter cells) that are the same as the parent cell. Body cells are made.
Mitosis
Process of cell division in which four "daughter" cells are produced from one "parent" cell, each with half of the genes of the parent. Makes gametes or sex cells.
Meiosis
Meiosis Mitosis – somatic cells Meiosis – makes sex cells (sperm & egg)
◦ AKA gametes◦ Have a half-set of chromosomes (haploid)◦ 2 cell divisions◦ Makes 4 cells◦ Same phases IPMATPMAT
Mitosis v. Meiosis Mitosis
◦ 1 cell division◦ Daughter cells identical to parents cells◦ Produces 2 cells◦ 2n → 2n◦ Produces cells for growth and repair◦ No crossing over
Meiosis◦ 2 cell divisions◦ Daughter cells different from parents◦ Produces 4 cells◦ 2n → 1n◦ Produces gametes◦ Crossing over