Microscopy - Khan Academy
Learn about microscopy and its importance in understanding cell structure and function on Khan Academy.
Khan Academy
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Introduction to cells and their functions.
Khan Academy
Review the basic concepts of cell structure and function with Khan Academy's interactive article. Learn how cells are the building blocks of life and explore their diversity.
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In this video we will explore the microscopic structure of bone or the Harvesian system in depth. Discover the difference between spongy and compact bone, learn about the function of osteons, and delve into the role of haversian canals, lacunae, and volkmann canals in bone health.
Components of blood - Khan Academy
White blood cells are larger than red blood cells, and unlike red blood cells, they have a normal nucleus and mitochondria. White blood cells come in five major types, and these are divided into two different groups, named for their appearance under a microscope.
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This video introduces the structure and structural types of neurons. Explore the structure of neurons, their types, and functions. Uncover the roles of dendrites, axons, and the soma. Learn about the axon hillock, axon terminals, and the myelin sheath. Discover the different structural types of neurons: unipolar, bipolar, multipolar, and pseudounipolar.
Basic Geometry - Khan Academy
This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If you are learning the content for the first time, consider using the grade-level courses for more in-depth instruction.
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.
Introduction to carbohydrates (video) | Khan Academy
A carbohydrate is a type of molecule that contains carbon, hydrogen, and oxygen. Carbohydrates can be simple sugars (monosaccharides) like glucose, or they can be made up of multiple sugar units (polysaccharides) like glycogen. They are important in biology as a source of energy and as structural components in plants.