DIGESTION AND ABSORPTION OF CARBOHYDRATES

Question 1

SALIVARY AMYLASE BREAKS WHAT BOND AND WHAT ARE THE PRODUCTS ?

Answer 1

1,4 Glycosidic bonds.
The products are Maltose, Maltotriose, alpha limit dextrins

Question 2

What are the brush border enzymes ?

Answer 2

Lactase
Maltase
Sucrase + isomaltase

Question 3

What enzyme breaks alpha limit dextrins ?

Answer 3

Isomaltase

Question 4

How is Fructose absorbed in the Small intestine ?

Answer 4

By Glut 5 transported

Question 5

How is glucose and galactose absorbed in the small intestine ?

Answer 5

By active transport with Na+ diffusion and SGLT transport

Question 6

How is glucose, Galactose and fructose transported to the liver ?

Answer 6

By Glut 2 transport

Question 7

What is Glucose and galactose malabsorption ?

Answer 7

Caused by mutation of SLCA51 causing a defective SGLT-1
Fatal in early infants.
Diarrhoea and dehtdration

Question 8

What is De vivo disease ?

Answer 8

Caused by mutation in SLCA21 causing. A defective GLUT 1 transported to the brain
AD
Infantile encephalopathy
Low glucose and Lactate in csf

Question 9

What is fanconi Bickel syndrome ?

Answer 9

Defective GLUT-2 transporter
Glucose cannot exit live
Glycogen acumulation’

Failure to thrive
Hepatosplenomegaly
VITAMIN D RICKETS