A Level Biology: Sugars
How many carbons are in pentose sugars?
5
How many carbons are in hexose sugars?
6
What substance is used to test for the presence in sugar molecules?
Benedicts
What is the formula of deoxyribose?
C5H10O4
What is the formula of ribose?
C5H10O5
What is the formula for glucose?
C6H12O6
What is deoxyribose a component of?
DNA
In alpha glucose, what is the order (from the top down) of the bonds on carbon 1?
Hydrogen, carbon, hydroxide
In the body, what enzyme breaks apart disaccharides with hydrolysis?
Hydrolase enzymes
What is the reverse of a condensation reaction that can be used to break apart a disaccharides into two monosaccharides?
Hydrolysis
What is ribose a component of?
RNA, ATP and NAD
True or false: sucrose is NOT a reducing sugar?
True
What is the bond called that joins the two monosaccharides in a disaccharide?
alpha 1,4 glycosidic bond
What elements do carbohydrates contain?
carbon, hydrogen and oxygen
What substance is beta glucose a component of?
cellulose
What reaction occurs when making a disaccharides from two monosaccharides?
condensation
what two monosaccharides make up sucrose?
glucose and fructose
what two monosaccharides make up lactose?
glucose and galactose
Is fructose a hexose or pentose sugar?
hexose
Is galactose a hexose or pentose sugar?
hexose
Is glucose a hexose or pentose sugar?
hexose
In beta glucose, what is the order (from the top down) of the bonds on carbon 1?
hydroxide, carbon, hydrogen
Is ribose a hexose or pentose sugar?
pentose
What substances is alpha glucose a component of?
starch and glycogen
what two monosaccharides make up maltose?
two glucoses
What is a disaccharide?
two monosaccharides joined together
What molecule is lost when joining two monosaccharides?
water
