HAPPY FRIDAY Bellwork: -You have 5 minutes to COMPLETE your I.A.N. and turn it into the drawer…..you will leave it with me for the weekend. -On your Bellwork Sheet write “Finish I.A.N.” -Have open your Buff Binder, I will come around to check it.

Carbohydrates & Lipids

Objective : The objective of class today is to learn the structure and function of carbohydrates and lipids in living systems.

Living things use carbohydrates as their main source of energy. Plants and some animals also use carbohydrates for structural purposes.

The breakdown of sugars supplies immediate energy for all cell activities.

Living things store extra sugar as complex carbohydrates known as starches.

Single sugar molecules are called monosaccharides. (simple sugars)

Three examples of monosaccharides include: Glucose Galactose Fructose

Large molecules made from monosaccharides are called polysaccharides.

Three examples of a polysaccharide include:

Carbohydrates Rings that link together in chains contain C, H, O Ratio of carbon: hydrogen: oxygen is 1:2:1 energy = 4 cal/gram

Carbohydrate Structure:Functions: Monomer:Polymer: Circle or ring shaped Create a 1:2:1 ratio Elements: C, H, O Main source of immediate energy Good to know: Often known as simple (monomers) and complex (polymers) Monosaccharide Examples: glucose, sucrose Polysaccharide Examples: starch, cellulose

Energy in Food Burning carbohydrates – watch and write down your observations Burning carbohydrates Burning lipids – take notes and write down any observations Burning lipids Calories in food – take notes…MAKE SURE you write down how many calories per gram in each biomolecule AND the daily recommended allowance Calories in food