3.1.1 Monosaccharides And Polysaccharides Flashcards
Why do you reducing sugars turn the Benedicks solution brick red?
The reducing sugars can donate electrons to the reducing agent e.g. Benedict’s solution
Name, three disaccharides
Sucrose lactose maltose
How can we make Benedict’s test more accurate?
Filter the precipitate and weigh it
Explain the polysaccharide amylose (angles)
The angles of the glycosidic bonds make amylose compact, making it suitable for energy.
Alpha glucose
What is a monosaccharide?
A single sugar molecule
Which two monosaccharides makes sucrose
Glucose and fructose
Explain the polysaccharide cellulose, and why cellulose is so strong
Cellulose is a beta glucose.
The beta glucose joined together to make cellulase chains, which have strong H bonds. These bonds create fibres which consist of microfibrils, which provide strength, making it suitable to act as the cell wall.
Explain the polysaccharide amylopectin (enzymes) 
The branches on amylopectin allow enzymes (which can break down the molecule) to reach that like acidic bonds, making it easier to release glucose, alpha glucose
Which two monosaccharides make lactose
Galactose and glucose
Why is starch suitable for energy storage?
Starch is insoluble therefore doesn’t affect the water potential. This means water doesn’t enter cells via osmosis and caused them to swell. This makes it suitable for energy storage
Which two monosaccharides make maltose
Glucose and glucose
What is an isomer?
Isomers are molecules with the same molecular formula, but different atom arrangements
What bond is formed between two monosaccharides as they join together
A glycosidic bond
