Flashcards in Carbohydrates Deck (16):
What is the formula of glucose?
What makes up a carbohydrate?
What is the Benedict’s test?
The test for reducing sugars
Equal volume of testing solution to equal Benedict’s reagent
Heat to 70 degrees Celsius
Red is strong positive green is weak positive blue is negative
Calorimeter can be used to test colour
What is the test for a disaccharide?
2 to 1 ratio of test solution to dilute HCL
Add excess NaOH to neutralise
Repeat test for reducing sugar
What makes up maltose? What is maltose?
A disaccharide made up of two alpha glucose molecules
What is the process of joining two starch molecules called?
A condensation reaction
What is the process of separating two starch molecules called?
What makes up sucrose?
Glucose and fructose
What makes up lactose?
Glucose and galactose
What is a polysaccharide?
A long chain of monosaccharides
What is the general formula of a Carbohydrate?
What are starch' two polymers called?
Amylose and Amylopectin
What is the structure of Amylose?
Chain of Alpha glucose. oils into a helix. Compact and so a good storage molecule. Glucose molecules joined by 1-4 links.
What is the structure of amylopectin?
Made of alpha glucose, forms long branched chains. Long chains mean few ends and so is difficult to break down which makes it good for storage. glucose molecules joined by 1-4 links but where a branch joins a main chain a 1-6 link forms
What makes up starch?
Amylose and amylopectin