Khan Academy
Learn the basics of microscopy and how it is used to study cells and their structures.
Khan Academy
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Cell biology and microscopy (article) | Khan Academy
Learn about cell biology and the different types of microscopes that allow us to observe cell structure and function.
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Learn about the structure and function of cells in this introductory video from Khan Academy.
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Intro to eukaryotic cells. Prokaryotic and eukaryotic cells. Plasma membrane and cytoplasm. Nucleus and ribosomes. Basic characteristics of the cell.
History and development of cell theory (video) | Khan Academy
Explore the fascinating journey of cell theory development, from Anton van Leeuwenhoek's discovery of bacteria to Louis Pasteur's debunking of Abiogenesis. Learn how scientists like Robert Hooke, Matthias Schleiden, and Theodor Schwann contributed to the three major tenets of cell theory, shaping modern biology.
Unit 3: How telescopes and microscopes work. - Khan Academy
How telescopes and microscopes work.: Quiz 1; Paths of light rays through spherical lenses; Image formation in spherical lenses; Using magnification formula for lenses; Using the lens formula; Convex and concave lenses; Thin lens formula - virtual object; Image formed by …
Compound microscope and telescope - Khan Academy
Let's solve some problems to better understand how compound microscopes and telescopes work. We will understand the purpose of each lens in these optical instruments.
Khan Academy
Course: AP®︎/College Biology > Unit 3. Lesson 4: Photosynthesis. Photosynthesis. Intro to photosynthesis. Breaking down photosynthesis stages. Conceptual overview of light dependent reactions. The light-dependent reactions. The Calvin cycle. Photosynthesis evolution.
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Cellular respiration is the process by which cells derive energy from glucose. The chemical reaction for cellular respiration involves glucose and oxygen as inputs, and produces carbon dioxide, water, and energy (ATP) as outputs. There are three stages to cellular respiration: glycolysis, the Krebs cycle, and the electron transport chain.