Class Notes (809,757)
Canada (493,779)
Biology (1,278)
BIOL 110 (104)

Abosorption and Active Uptake

2 Pages
Unlock Document

Queen's University
BIOL 110
Gordon Dueck

Absorption And Active Uptake Of The Products Of Digestion In Small Intestine Glucose  Absorbed by epithelial cells using a protein carrier  This protein carrier works by secondary active transport (co-transport system)  Glucose and Na+ are transported across the membrane into the intestinal cell  Further transport of glucose into blood capillaries by facilitated diffusion  NOTE: Fructose moves entirely by facilitated diffusion! Amino Acids  Absorbed by epithelial cells by secondary active transport  Co-transport carrier proteins absorb amino acids and Na+ across the membrane o Different carrier molecules transport different types of amino acids o Carriers are associated with peptidase  Passes from the epithelial cells into capillaries by facilitated diffusion  Newborns don't produce trypsin, HCl → proteins are not digested before small intestine is reached o Whole proteins may be transported by endocytosis and exocytosis o Uptake by endocytosis, release into blood by exocytosis o Often occurs in newborns due to their immature mucosa o Allows passage of antibodies from mother's milk - provides passive immunity for the infant o Accounts for many early food allergies as the protein is recognized as "foreign" Lipids  Triglycerides digested into monogylcerate + glycerol + fatty acids by li
More Less

Related notes for BIOL 110

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.