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Energy and Life: The Transformation of Energy in Living Organisms
While the sun is an excellent source of energy, not all forms of life can utilize the sun's energy directly. This lesson describes how plants transform the sun's energy into potential energy stored in sugar, how living organisms utilize...
Khan Academy
Khan Academy: Atp Synthase
ATP synthase and its role in mitochondria during respiration and chloroplasts during photosynthesis. [4:26]
Khan Academy
Khan Academy: Atp & Respiration
Hank does some push ups for science and describes the economy of cellular respiration and the various processes whereby our bodies store energy in the form of ATP. [12:59]
Khan Academy
Khan Academy: Activation and Inhibition of Signal Transduction Pathways
Using the signal transduction pathway for the cholera toxin to understand activation and inhibition. [5:55]
Khan Academy
Khan Academy: Reproduction and Cell Division: Phases of Meiosis I
Learn how homologous chromosomes separate into two sets during prophase I, metaphase I, anaphase I, and telophase I. [9:44]
Khan Academy
Khan Academy: Reproduction and Cell Division: Comparing Mitosis and Meiosis
Comparison of the processes of mitosis and meiosis. Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are...
Khan Academy
Khan Academy: Cells: Cell Theory
Introduction to cell theory including roles of Hooke, Leeuwenhoek and others in its development. [8:02]