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Glucose is a single chain, fructose is 2 carbon rings attached by an oxygen atom. Is it not easier to split 2 stable rings at an oxygen (to give 2 OH groups) than it is to start carving up a straight chain molecule?
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∙ 14y ago
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∙ 12y agoBecause yeast can directly metabolize glucose. They have to manufacture enzymes to convert other sugars (such as sucrose) to glucose. Yeast only have so much to give; if they're producing enzymes, they can't metabolize glucose.
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∙ 9y agoGlucose ferments faster because it is a single sugar molecule and it does not need to be digested or broken down. The breakdown of glucose starts the path to fermentation.
Wiki User
∙ 12y agoGlucose is the most basic of the sugars so there's less time needed for the yeast to break it down, so more activity faster.
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∙ 9y agowhat gas is taken up by soybeans in cellualr respiration
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Why glucose is injected in human bodies to supply energy instead of sucrose?
because glucose is simpler than sucrose.
Does ingestion of glucose raise blood sugar faster than sucrose?
Yes , glucose (dextrose) rise blood sugar faster than any other carbs . Other carbs like vitargo or karbulyn are so effective aswell
Is glucose sugar the sugar you buy from stores?
Sucrose is ordinary table sugar; glucose is simpler and more refined than sucrose.
Is sucrose molecules bigger than glucose molecules?
Yes
Why to supply energy in emergency glucose is injected in human body but not sucrose?
Sucrose is a complex carbohydrate while glucose is a simple carbohydrate. Sucrose can be taken but its synthesis takes time by than the person may become more week. Since glucose is already simple there is no need for its synthesis and hence it give instant energy. Therefore glucose is chosen over sucrose.
Why is fructose used?
Fructose as an ingredient or a 'sugar' replacement in your coffee or tea is normally consumed by diabetic sufferers. This is because it has a lower glycaemic index than sucrose (regular sugar). This means that when fructose is consumed the body takes longer to metabolise it into, its main energy source, glucose. So therefore, the glucose formed from fructose is absorbed into the blood stream much slower than what would be seen for sucrose. This is due to the different formations and shapes of the fructose and sucrose. So a more complex shape (fructose) would take longer to breakdown into the shape of glucose and the simpler shape (sucrose) would breakdown faster to glucose.
Why are cooked sucrose solution sweeter than uncooked sucrose solution?
During cooking, sucrose hydrolyses into its monomers, glucose and fructose. This mixture is commonly known as "invert sugar". Invert sugar shows more sweetness than sucrose.
What sugar does yeast prefer for aerobic respiration?
Glucose. It can also use sucrose and maltose, but much less than glucose.
Why dextrose rather than normal saline?
It's a monosaccharide. Sucrose breaks into glucose and fructose. Glucose is more easily metabolized. Why add two sugars when one will do? Answer: Glucose is the sugar that our cells use for energy. When we eat sucrose (table sugar) it is converted to glucose (metabolized) before the cells are able to use it. This is done by a system that evolved to receive sucrose via the digestive tract. It does not work well when supplied intravenously, and so direct injection of sucrose into the blood could seriously alter blood chemistry with a number of unwanted consequences.
Will glucose or sucrose under go more fermentation?
Sucrose is a double sugar and one molecule of sucrose is broken into one molecule of glucose and one molecule of fructose by the yeast (with and enzyme called invertase) prior to fermentation. From a pure chemical reaction perspective 1kg of can produce slightly more alcohol than 1kg of glucose, but given the right environment yeast can fully ferment both. Most brewers yeast prefers glucose to fructose so the glucose will be tend to be consumed first. Glucose is more expensive than sucrose so sucrose is a more cost effective choice.
Why rate of anaerobic respiration is faster in starch than in glucose?
Infact it should. It is a common misconception that because Glucose is a monosaccharide that it should provide a higher rate of respiration as it does not need to be broken down, unlike sucrose. However, the method the glucose enters the yeast enters the cell is by facillitated diffusion and this requires carrier proteins. When glucose is being absorbed, there will be a point where the rate reaches it's maximum, i.e. all the carrier proteins are being used. When sucrose is the substrate, it is split into glucose and fructose. When all the carrier proteins are used transporting glucose, different proteins are used for fructose (due to the tertiary structure of the protein) so the composite monosaccharides of sucrose can enter the yeast at a higher rate. Hence the rate is faster.
Why invert sugar is more sweet than sucrose?
Inverted sugar is sweeter than sugar because upon splitting the sucrose molecules into 2 molecules, one of fructose and one of glucose, the concentration of sugar molecules doubles (i.e. 1 pound of sucrose -> 1 pound glucose + 1 pound frucose = 2 pounds sugars).
