Biology

Biology, 06.12.2019 01:31, gtemple22pdzs4j

The typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. the available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day.

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Biology, 23.07.2019 17:00, JAXKBOII55951

Cellular glucose concentration the concentration of glucose in human blood plasma is maintained at about 5 mm. the concentration of free glucose inside a myocyte is much lower. why is the concentration so low in the cell? what happens to glucose after entry into the cell? glucose is administered intravenously as a food source in certain clinical situations. given that the transformation of glucose to glucose 6-phosphate consumes atp, why not administer intravenous glucose 6-phosphate instead?

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Biology, 24.10.2019 23:43, aaron2113

Assessing the metabolic consequences of life without enzymesthe incredible catalytic power of enzymes can perhaps best be appreciated by imagining how challenging life would bewithout/ust one of the thousands of enzymes in the human body. for example, consider life without fructose-1,6-bisphospha tase, an enzyme in the gluconeogenesls pathway in liver and kidneys (see chapter22), which producenew glucose from the food we eat: fructose-1,6-blsphosphate e h20 -» fructose-s-f + pithe human brain requires glucose as its only energy source, and the typical brain consumes about 120 g (or 480 calories)of glucose dally. ordinarily, two pieces of sausage pizza could provide more than enough potential glucose to feed thebrain fora day. according to a national fast-food chain, two pieces of sausage pkza provide 1340 calories, 48% of whichis from fat. fa ts cannot be converted to glucose in gluconeogenesls, so that leaves 697 calories poten tially available forglucose synthesis. the first»order rate constant for the hydrolysis of fructose-1,6-blsphosphate in the absence of enzymeis 2‘10-20/sec. calculate how long it would take to provide enough glucose for one day of brain activity from two piecesof sausage pizza without the enzyme.

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Biology, 11.12.2019 21:31, GoAheadAndSmileToday

Glucose is essential for the body to function. nearly all tissues use glucose for energy and biosynthesis, and the brain relies heavily on glucose as an energy source. both dave’s and michael’s livers must have produced some glucose during their three‑week experiment before the marathon. classify each substance based on whether a healthy person's liver can use it to create glucose for the brain and other tissues.

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Biology, 13.12.2019 00:31, WANEES13

The typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. the available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day. after the reserve has been depleted during starvation, what other sources can be used to produce glucose?

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