Cells and Molecules
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Introduction
Cells are fundamental units of the body. They are arranged into tissues. Cells are made up of molecules. The cell surface membranes and nucleus membranes are made up of fats, with chunks of protein studding them.
Carbohydrate chains and trees are attached all over the place, playing an absolutely critical role in the highly specialized signals required for life as a cell and a person.
Proteins make up the receptors on the cell surface, enabling them to respond to signals from themselves, other cells, pathogens, environmental conditions, or damage. Proteins also make up the machines that make a cell work (so called kinases), the structural framework of the body (like collagen), and many of the body's signaling mechanisms (like insulin).
Watch Harvard University's Inner life of a cell, first without narration and then with narration
Cell Structure
Cell Types
Cell Behaviours
- mitosis
- miosis
- movement
- adhesion
- protein synthesis
- endocytosis
- exocytosis
Cell Organelles
- cell membrane
- nucleus
- mitochondrion
- endoplasmic reticulum
- ribosome
- Golgi Apparatus
- cytoskeleton
- lysosome
Molecules
Molecules are pretty important. In this section, various molecules are discussed.
- Proteins are responsible for essentially everything that happens in the body. They are composed of amino acids.
- Carbohydrates provide energy and perform important sigaling and recognition functions.
- Lipids form cell membranes, provide energy, and are used to synthesize various other molecules.
- Nucelic acids represent the storage and manifestation of information responsible for cell, tiusse, and organism behaviour.
- Ions produce osmotic gradients and signals.
- Water is by far the most prevalent and important molecule of the body.
- Gases... are hard to explain in one line.
- Organic Chemistry
- General Chemistry
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