Carbohydrates Flashcards
finish the sentence
Organic molecules are ones that contain …….
- Carbon
What are monosaccharides?
- Monosaccharides are the monomers from which larger carbohydrates are made
- The single monomer (of sugar) ie. 1 sugar unit.
Monosacchardies = particular sugars
Give 3 examples of monosaccharides?
1.) Glucose
2.) Galactose
3.) Fructose.
How many isomers does glucose have, what are they?
- 2 isomers
- Alpha glucose
- Beta glucose.
What is an isomer?
- Isomer: same molecular formula but different structures.
- Ie. alpha and beta glucose are both isomers of glucose.
What are disaccharides?
- A pair of monosaccharides (ie. two sugar units.)
What are polysaccarides?
- Many monosaccharides joined together.
3 examples of disaccharides.
1.) Sucrose.
2.) Maltose
3.) Lactose.
3 examples of polysaccharides.
1.) Starch.
2.) Cellulose.
3.) Glycogen.
What actually forms a glycosidic bond?
- Condensation reaction between two monosaccharides forms a glycosidic bond.
How are disaccharides formed?
- Disaccharides are formed by the condensation of two
monosaccharides
What are maltose, sucrose and lactose examples of?
- Maltose, sucrose and lactose are examples of dissacharides.
Give the word equation for the condensation reaction of maltose.
glucose + glucose —> maltose+ water
formed by the condesation of two glucose molecules.
Give the word equation for the condensation reaction of sucrose.
glucose + fructose –> sucrose + water
Give the word equation for the condensation reaction of lactose.
glucose + galactose –> lactose + water
How are polysaccharides formed?
- Monosaccharides (ie. glucose units) joined together by glycosidic bonds that were formed from condensation reactions.