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