CHEM 181 Lecture Notes - Lecture 18: Photosynthesis, Fructose, Disaccharide

• School: McGill University
• Department: Chemistry
• Course: CHEM 181
• Professor: Mitchell Huot

Document Summary

**what is important is to recognize what the molecules have in common with one another. Carbohydrates and fats use only c, o, h. Proteins use c, o, h, n and a few other, such as sulfur. The amount of fats we intake has increased. Origin of the word carbohydrate: carbo from carbon and hydrate from water. Glucose and fructose: monosaccharides that make up sucrose. Molecule divided in 2 fragments: glucose and fructose, linked together by an oxygen atom. A disaccharide consists of 2 carbohydrate molecules whereas a monosaccharide consists of one. Carbohydrates are composed of glucose molecules, which are consumed, giving back water and co2 in a cyclical process. In a molecular model, whether and oh group is facing one way or the other will actually. When adding o2 to glucose, we produce co2 and h2o. Differs from cellulose in the bonding of the two glucose molecules constituting it.