Mass Transport In Plants And Animals Flashcards
What is endopeptidase ?
Hydrolyses peptide bonds within a polypeptide
Exopeptidase
Hydrolyses peptide bins at the end of a polypeptide chain
Membrane bound dipeptidase
Enzymes attached to membranes (eg ileum) , hydrolyses peptide binds between dipeptides
How are amino acids absorbed ?
- cotransport with Na+
- Na+ pumped out of cell
- creates low conc of Na+ inside cell
- Na+ diffuses in via cotransporter
- aa go in too , against conc gradient
In the gut where does majority of water absorption take place ?
Large intestine
Glucose is absorbed into the small intestine by …
Facilitated diffusion
Where is the ileum?
Small intestine
Lactose intolerance is caused by …
- injury to small intestine
- genetic factors
People with lactose intolerance commit produce what enzyme ?
Lactase
Valves are typically found in which blood vessels ?
Veins
Volume of blood pumped out of the heart per minute
Cardiac output
Ventricles contract from bottom ups wards because
To ensure all the blood is squeezed from the ventricles
What does myogenic mean ?
It can contract and relax without receiving signals from nerves
Where is the bundle of His located ?
In between both ventricles
Haemoglobin is made up of
Proteins and prosthetic groups - Fe2+
Quarternary structure
