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Disaccharide

Definition

noun, plural: disaccharides

A sugar (carbohydrate) composed of two monosaccharides, thus yields two monosaccharide molecules on complete hydrolysis.


Supplement

Examples are sucrose, lactose, maltose, trehalose, cellubiose.


Word origin: di- (two) + saccharide.

Also called: double sugar

Synonym:

See also: monosaccharide, polysaccharide


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Re: Help! I am in a digestive crisis!

Carbohydrate Enzymes Salivary Amylase (ptyalin) - made in the salivary glands, functions in mouth to hydrolyze (break down) starch to maltose (disaccharide) Pancreatic Amylase - made in the pancreas, functions in the small intestine to hydrolyze starch to maltose Maltase - made in the intestinal ...

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by SOS
Tue Jun 23, 2009 8:21 pm
 
Forum: Physiology
Topic: Help! I am in a digestive crisis!
Replies: 2
Views: 182

Macromolecules

... I have too draw structural diagrams on biomolecuels in their reaction stages. For examples a hexose (glucose) and a pentose (fructose) forming a disaccharide (sucrose). One of my questions says "ethanol" and I am not sure what to draw. I searched online and I just saw ethanol reacting ...

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by twenty10
Mon Dec 22, 2008 6:03 am
 
Forum: Molecular Biology
Topic: Macromolecules
Replies: 2
Views: 522

Re: Yeast fermentation with different carbohydrates

I would have expected glucose to be the highest, as it is ready to begin glycolysis. Sucrose is a disaccharide which needs to be broken down to glucose and fructose. Yeast does have the enzyme for sucrose.

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by MichaelXY
Fri Apr 04, 2008 11:37 pm
 
Forum: Microbiology
Topic: Yeast fermentation with different carbohydrates
Replies: 15
Views: 15993

Help Needed To Do with Fermentation in Yeast

... and measured CO2 production over ten mins. We were given set results they were: Sugar | Type of Sugar | Trial 1 | Trial 2 | Average Lactose | Disaccharide | 0.0 | 0.0 | 0.0 Sucrose | Disaccharide | 4.3 | 6.1 | 5.2 Glucose | Monosaccharide | 5.3 | 5.3 | 5.3 Maltose | Disaccharide | 6.3 | 8.0 ...

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by Renious02
Mon Mar 24, 2008 6:50 am
 
Forum: General Discussion
Topic: Help Needed To Do with Fermentation in Yeast
Replies: 1
Views: 496

Basic Bio Questions

... holding atoms together are generally referred to as _____________ bonds a. ionic b. covalent c. hydrogen d. hydrophobic 5. Which compound is a disaccharide? a. glycine b. starch c. glucose d. sucrose 6. Lipids, are by definition water ____________. a. soluble b. sugars c. insoluble d. fats ...

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by edbaseball17
Tue Sep 18, 2007 10:24 pm
 
Forum: General Discussion
Topic: Basic Bio Questions
Replies: 6
Views: 1060
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