Summary:
This video, "Crash Course- Biological Molecules," is about the four major molecules of life. They are proteins, carbohydrates, lipids, and nucleic acids. Carbohydrates are monosaccharides, disaccharides, and polysaccharides, making up compounds such as cellulose, glucose, fructose, and sucrose. Lipids are fats and steroids, used for long term energy storage. Proteins, the most complicated of the molecules, are made of amino acids. All of these molecules are received through the foods that we eat, and are essential to our life.
Relevence:
This video discusses in detail the molecules of life that we studied in unit two, and relates them to cellular functions we are leraning about now. It provides visualizations of what makes up these molecules, and reviews specifics that can be hard to remember, such as types of these molecules and specific examples and their uses.
Video Info:
URL: https://www.youtube.com/watch?v=H8WJ2KENlK0
Author: YouTube Channel CrashCourse
Date: 13 February 2012
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ReplyDeleteTrans fats are unsaturated fats with a double carbon to carbon bond in at least on of the fatty acid chains. They do occur in nature, however, most often they result from food processing techniques.
ReplyDeleteThey are unhealthy because they raise the levels of "bad" cholesterol and lower levels of "good" cholesterol (LDL and HDL, respectively). This leads to heart disease among other issues.
Why don't plants have ALL the proteins we need?
ReplyDeleteIn fact, they do. Though it is a common myth that vegetarian and vegan diets don't provide essential proteins, fruits and vegetables do provide every kind of protein that our bodies need. This has been supported by the fact that many of the world's largest animals, for example, elephants, are strictly herbivores, but still can grow to be far larger than most other animals.
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