23 Questions
Which enzyme is responsible for breaking down cellulose?
none
What is the primary function of pancreatic a-amylase?
Breaking down polysaccharides
What happens to salivary a-amylase in the stomach?
It gets deactivated by acidity
Which enzyme is responsible for breaking a(1-6) bonds in the small intestine?
a(1-6) glucosidase
What can result from lactase activity in infants?
Lactose malabsorption
Which type of bonds can a-amylase break?
(1-4) and (1-6) bonds
What is the main role of enterocytes in carbohydrate digestion?
Absorbing material into circulation
'Carb loading' 24-48 hours before a long distance race aims to:
Increase carbohydrate absorption
What is the source of the majority of amylase during carbohydrate digestion?
Pancreas
What is the impact of a(1-6) glucosidase activity in the small intestine?
It breaks a(1-6) bonds
What is the end result of a-amylase action on carbohydrates besides breaking them down?
Production of monosaccharides
Why does lactase need to be added to milk products?
To minimize lactose intolerance effects
Which transporter is responsible for the uptake of glucose and galactose on the interior of enterocytes?
SGLT1
What is the function of Glut 2 transporter in enterocytes?
High affinity uptake of glucose and galactose
Where do molecules have to go in order to enter the bloodstream from enterocytes?
Basolateral membrane
What does the liver do with fructose and galactose?
Glucose
Which transporter is responsible for the uptake of glucose into the liver?
Glut 2
Where is insulin released from in response to higher blood glucose levels?
Pancreas
Which transporter is expressed in skeletal muscle and adipose tissue and is dependent on insulin?
Glut 4
What does insulin help stimulate in skeletal muscle and adipose tissue?
Storage of glycogen
What condition can result from the body's inability to respond to insulin due to too much fat accumulation?
"Lipotoxicity"
What does the brain primarily rely on for energy?
Carbohydrates
What does the brain use for energy when starved?
Ketones
Test your knowledge of carbohydrate structure and the digestion process. This quiz covers topics such as glycosidic bonds, cellulose, carbohydrate digestion enzymes, and carb loading before long-distance races.
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