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Anatomy & physiology made incredibly easy!
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A tour of the Cell - Paul Andersen takes you on a tour of the cell. He starts by explaining the difference between prokaryotic and eukaryotic cells. He also explains why cells are small but not infinitely small. He also explains how the organelles work together in a similar fashion. Time: 14:17.
Parts of a Cell by Khan Academy - Parts of a cell: nucleus, ribosomes, endoplasmic reticulum, Golgi bodies, mitochondria, chloroplasts, vacuoles, and vesicles. Time: 21:02
The Inner Life of a Cell by sciMedia -Compoture animated rendering of the inner life of a cell. Time: 8:00.
Cellular Respiration by Bozeman Science - Paul Andersen covers the processes of aerobic and anaerobic cellular respiration. He starts with a brief description of the two processes. He then describes the important parts of the mitochondria. He explains how energy is transferred to ATP through the processes of glycolysis, the Kreb cycle and the Electron Transport Chain. He also explains how organisms use both lactic acid and alcoholic fermentation. Time: 14:14.
Anaerobic Respiration by Bozeman Science - Paul Andersen explains the process of anaerobic respiration. This process involves glycolysis and fermentation and allows organisms to survive without oxygen. Lactic acid fermentation is used in animals and bacteria and uses lactate as an electron acceptor. Alcoholic fermentation used ethyl alcohol as an electron acceptor.
Time: 8:00.
Photosynthesis by Bozeman Science - Paul Andersen explains the process of photosynthesis by which plants and algae can convert carbon dioxide into useable sugar. He begins with a brief description of the chloroplast. He describes the major pigments in a plant (like chlorophyll a and b). He then describes both the light reaction and the Calvin cycle. He finishes with a discussion of photorespiration and strategies for avoiding this problem evolved in CAM and C4 plants. Time: 12:27.
Phases of Mitosis by Khan Academy -Explanation of the phases of mitosis. Time: 20:42.
Mitosis by Bozeman Science - Paul Andersen describes the process of mitosis. He begins by discussing the importance of the cell cycle in development, regeneration, asexual reproduction and wound healing. He differentiates between haploid and diploid cells and describes the structure of the chromosome. He then moves through all the phases of mitosis; interphase, prophase, metaphase, anaphase, telophase and cytokinesis. Time: 13:35.
Meiosis by Bozeman science - Paul Andersen explains how the process of meiosis produces variable gametes. He starts with a brief discussion of haploid and diploid cells. He compares and contrasts spermatogenesis and oogenesis. He explains how each person is different due to independent assortment, crossing over and random fertilization. Time: 13;35.
Phases of Meiosis - Khan academy - Time: 27:23
Mitosis, Meiosis and Sexual Reproduction Khan Academy - Mitosis, meiosis and sexual reproduction. Understanding gametes, zygotes, and haploid / diploid numbers. Time: 18:23.
Mendelian Genetics Bozeman science - Paul Andersen explains simple Mendelian genetics. He begins with a brief introduction of Gregor Mendel and his laws of segregation and independent assortment. He then presents a number of simple genetics problems along with their answers. He also explains how advances in genetic knowledge may lead to ethical and privacy concerns. Time: 16:04.
Genetics Bozeman science - Paul Andersen reviews the concepts discovered by Gregor Mendel. Time: 11:46.
DNA Lesson - Khan Academy - Time: 28:05.
DNA Replication - Bozeman science - Paul Andersen explains how DNA replication ensures that each cell formed during the cell cycle has an exact copy of the DNA. He describes the Meselson-Stahl experiment and how it showed that DNA copies itself through a semi-conservative process. He then explains how multiple enzymes, like DNA polymerase, helicase, primase, ligase, and single strand binding proteins copy DNA. He also differentiates between the leading and the lagging strand. He explains how DNA is anti-parallel in nature and how eukaryotic cells have multiple origins of replication. Time: 10:10.
Transcription and Translation Bozeman Science - Paul Andersen explains the central dogma of biology. He explains how genes in the DNA are converted to mRNA through the process of transcription. He then explains how ribosomes use this message to convert the mRNA to a functioning protein. He also shows you how to decode a gene by converting the DNA to complementary mRNA and then to the specific amino acids in a protein.
Time 11:57.