 Prokaryote ◦ No nucleus ◦ Unicellular ◦ Example: Bacteria  Eukaryote ◦ Nucleus ◦ Complex organelles ◦ Uni or multicellular ◦ Example: Us!

 Responsible organelles ◦ Animal cell – mitochondria ◦ Plant cell – chloroplast  It’s all about ATP ◦ Make it or break it

 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

 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.

 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.

 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 ◦ 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

 The movement of particles from high to low concentration  Osmosis = water only  Cell membrane responsible ◦ Semi-permeable  Want to achieve homeostasis