Carbs - Disaccharides Flashcards
What are disaccharides?
Sugars that are composed of 2 monosaccharides joined together in a condensation reaction
How are disaccharides formed?
By joining 2 monosaccharides together in a condensation reaction
What are the properties of disaccharides?
2
Like monosaccharides;
- soluble
- sweet-tasting
(They are sugars)
What determines which disaccharide is formed?
The combination of monosaccharides
What are combined to form maltose?
a-glucose
a-glucose
What is maltoses role?
Energy source in germinating seeds
What are combined to form sucrose?
a-glucose
Fructose
What is sucroses role?
It’s transported in the phloem to provide sugars to other parts of the plant
What are combined to form lactose?
Energy source in milk for infant mammals
How are glycosidic bonds made?
2 monosaccharides join together through condensation to from disaccharide
Water molecule lost
Bond is known as glycosidic bond
What is a glycosidic bond called?
A covalent bond formed between two monosaccharides by a condensation reaction
How are glycosidic bonds named?
Depending on which carbon atoms they are formed between
How are disaccharides broken down?
Through hydrolysis reaction to from 2 monosaccharides
It required water to be added to break the bond
