BIOL 2457 1st Edition Lecture 7Outline of Last Lecture I. The Cellular Level of Organization Outline of Current LectureI. The Cytoplasm a. Cytosolb. Organelles II. Cytoskeleton a. Network of protein filaments throughout the cytosol b. Structural support for the cell III. Organelles IV. Centrosome V. Cilia -Move fluids along the cells surface VI. Flagella –Moves an entire cell VII. Ribosomes -Protein synthesis VIII. Endoplasmic Reticulum a. Smooth -No ribosomes but still makes synthesizes fatty acids, etcb. Rough -Contains ribosomes for protein synthesis IX. Golgi Complex X. Lysosomes XI. Mitochondria a. Same DNA as mother and only women can pass it on b. Makes ATP c. POWERHOUSE d. Cristae- folds of the inner membrane e. Matrix- Large central cavity f. Semi-origin theory- mostly anaerobic plants on the planet, but then began to produce photosynthesis, oxygen begin to be produced, now we had bacteria needing high levels of oxygen XII. Nucleus a. Nuclear Envelope- double membrane, separates from cytoplasm b. Nuclear Pores- Numerous openings in envelope, control movementc. Nucleolus- Produces ribosomes d. Genes- Cell’s hereditary unitse. Chromosomes- Long molecules of DNA combined w protein molecules XIII. Somatic Cell Division- Mitosis-Duplicates its contents and divides into two-46 chromosomesa. Homologous- 2 chromosomes make up each pairb. Diploid- Somatic cells contain 2 sets of chromosomes XIV. Mitosis- a. Interphaseb. Prophasec. Metaphased. Anaphasee. Telophase XV. Meiosis- a. IPMAT
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