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6

I thought this was a great question. In particular because it hints at two questions. The first is 'why carbohydrates are used to store energy' in general. The second being 'why glucose rather than other carbohydrates?' in particular. Glucose metabolism (and glycogen storage) is a core gene pathway - its found in bacteria archaea and eukaryotes. So ...


5

The minimum requirement for E. coli and other bacteria to grow and survive is called minimal medium. It's even defined at Merriam-Webster: a medium that contains only inorganic salts, a simple carbon source (as carbon dioxide or glucose), and water Water and glucose are pretty easy, but the source of salts may often change; regardless, you really need ...


3

This is only a guess but I hope somewhat educated, so refute me. The establishment of glucose as nutritional molecule is mainly linked with the availability of carbohydrates in the environment, i.e. plants as nutrition. Before plants evolved however, there were only bacteria and they use glucose as one of many oligosaccharides. But more important than ...


2

Yes, but no. In other words, this quote is not probably not true in the ways you'd think. Bacteria can survive on practically nothing for long periods of time, but whether you call that life is subjective. Nitrogen is necessary for all the co-enzymes and proteins to sustain life. In order to get energy, if E coli. needs to metabolize nitrogen to waste at ...


2

In prokaryotes the glucose transporter is always present in the cell membrane; in cells whose glucose uptake is insulin-regulated the transporter is only present in the plama membrane when hormone levels are high. GLUT4 is the isulin-regulated glucose transporter found in muscle and adipose tissue. When insulin levels are low the GLUT4 protein is in the ...


1

Determining what is considered to be "normal" is quite challenging indeed. Both the ADA and the WHO look at upgrading diagnosis limits and both have a conservative approach, primarily due to the difficulties in conducting large scale studies and the anomalies between assumptions of plasma glucose distribution and what is probably actually present in ...


1

Where is this occurring in the body? Almost totally in the liver. To leave the liver as a sugar, it would have had to been converted to glucose, right? Correct, but it's not a direct conversion. Fructose is metabolized almost completely in the liver in humans, and is directed toward replenishment of liver glycogen and triglyceride synthesis... ...



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