HTHSCI 1LL3 Lecture Notes - Lecture 14: Trinity Broadcasting Network, Glut4, Duodenum
22 Jun 2018
School
Department
Course
Professor
CARBOHYDRATES
¢→
33 DD §
Overview
•Starch :polymer of glucose
•
Lactose :Combination of glucose +galactose
-
carb IWM dairy
•
sucrose :combination of glucose tfracture
•
Salivary amylase helps digest starches from the mouth
•
As you swallow digestion It shut OH In the Stomach
•
Food Enters
small intestine
•
pahweale releases aamylase which Continues digestion
•
Disaccharide ate :enzyme that breaks down disaccharide
-
Sncrase ,
lactate ,maltase ,isomattate
-
Maltose :2units of GIULOH
•
Anything we can't digest becautl of lack of enzyme becomes fiber
-
fiber Is excreted In feces
•
digestion +absorption occurs in intestines
.
Carbohydrates
•Carbs make up largest portion of diet Ifruit ,vegetables ,grains)
•
Animal products IHsht meat )have tCarbohydrate (just dairy products)
•Glucose is highly polar
-Carbon 1Is ahomenc and depending on whether OH is up or down it can be alpha or beta
-
Glycosidic bonds are between sugars
-
Enzymes are specific
Polysaccharides
•
glycogen : a polymer of glucose Ial -4)
•
starch :energy storage polysaccharide for plants 1at -4) have atbglywsidic bonds
•Cellulose has Bbonds IBl -4)
-
We can break down abonds but not Bbonds :.Cellulose is fiber
Starch tDisaccharides
•The goal is to use dietary foods to produce energy to run the processes in the cell
•
The first step In storage is digestion ,using various enzymes at different areas in the digestive tract
•
Once the starches and disaccharides are broken into monosaccharide they can be absorbed Into the body
