22 JUL 2014 by ideonexus
Human Respiration is Carbon Neutral
The very first time you learned about carbon dioxide was probably in grade school: We breathe in oxygen and breathe out carbon dioxide. Any eight-year-old can rattle off this fact. More specifically, the mitochondria within our cells perform cellular respiration: they burn carbohydrates (in the example shown below, glucose) in the oxygen that we breathe in to yield carbon dioxide and water, which we exhale as waste products, as well as energy, which is required to maintain...
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1 We exhale carbon and that carbon is sequestered in the next plant we eat.
29 DEC 2013 by ideonexus
Glucose and Oxygent Improve Memory Formation
Increasing glucose and oxygen supplies to the brain seems to allow iniformation to be committed more accurately and fully to memory; in other words, you learn better. This means when you come to recall it at a later stage, you will undoubtedly do better, because the information there is clearer and more comprehensive. The reverse does not seem to be true, however. If you first encoded something without the aid of extra oxygen and glucose, suddenly making more oxygen and glucose available when... 1 
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notesNot memory retrieval, but well-timed breathing exercises and soda can improve the retention of learning.
10 DEC 2013 by ideonexus
Vitamins Come from Living Things
Every vitamin is made by living cells — either our own, or in other species. Vitamin D is produced in our skin, for example, when sunlight strikes a precursor of cholesterol. A lemon tree makes vitamin C out of glucose. Making a vitamin is often an enormously baroque process. In some species, it takes 22 different proteins to craft a vitamin B12 molecule.
While a protein may be made up of thousands of atoms, a vitamin may be made up of just a few dozen. And yet, despite their small size, v...They are part of our universal chemistry from our common origins.
11 JUN 2012 by ideonexus
The Chemical Decline in Energy
It is the destiny of wine to be drunk, and it is the destiny of glucose to be oxidized. But it was not oxidized immediately: its drinker kept it in his liver for more than a week, well curled up and tranquil, as a reserve aliment for a sudden effort; an effort that he was forced to make the following Sunday, pursuing a bolting horse. Farewell to the hexagonal structure: in the space of a few instants the skein was unwound and became glucose again, and this was dragged by the bloodstream all t...Levi describes with wonder the chain of events leading to an increase in entropy as energy is used up in the body.
24 SEP 2011 by ideonexus
The Brain Consumes Lactose During Exercise
Scientists have discovered that lactose, a byproduct of intense muscular activities, can be used to fuel the brain with energy. When glucose, the natural fuel of the brain, is no longer present in sufficient quantities, the cell tissue can “switch” to alternative energy, to prevent any damage to the brain on account of the lack of energy.
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Consequently, by consuming the lactose in the blood, the brain clears the way for glucose, the main powering substance in the body, to reach the...This frees up the body's glucose to fuel the muscles in times of high energy demands on the body (Note: This meme must be wrong in using the term "lactose," because that is a sugar that comes from milk. "Lactate" is a byproduct of muscles consuming glucose that fuels the brain while the muscles take energy-precedence).
