Biochem -Carbs Flashcards
What 2 monosaccharides make up lactose?
Galactose and Glucose
What are the base chains and the attachment points.
Alpha 1-4 base
Alpha 1-6 chains
What 2 monosaccharises make up sucrose?
Glucose and fructose
Which polysaccharide is composed of glucose units linked by alpha-1,4 linkages?
Amylose
What polysaccharide has long chains of alpha-1,4 and every 25 molecules has an alpha 1,6 branch?
amylopectin
What polysaccharide has glucose linked by alpha 1,4 and alpha 1,6 linkages
Glucose
What polysaccaride has glucose molecules bound at beta 1,4 linkages?
Cellulose
Which disaccharide has 2 glucose units?
Maltose
Salivary amylase breaks down what type of linkages?
Alpha 1,4
Maltase cleaves which linkage?
Alpha 1, 4
The enzymes maltase, sucrase, dextrinase and lactase are found where?
In the brush borders of the mucosal cells
What is the rate limiting enzyme in the reaction of fructose to glucose?
fructokinase
What is the rate limiting enzyme in the reaction of galactose to glucose?
Galactokinase
Dextrin is only released from the hydrolysis of which polysaccharide?
Amylopectin
What is the rate limiting enzyme of Glycolosis?
Phosphofructokinase
Which enzyme is stimulated by stress, found in all tissues
Hexokinase
Which enzyme used in Glycolysis is stimulated by insulin, found in the Pancreas and Liver?
Glucokinase
Which glycogen acts as a ready source of Hexose units that are used for Glycolysis within the muscle?
Muscle glycogen - it is rarely depleted, except after long vigorous exercise bouts.
Which glycogen is mainly used for Blood Glucose mainetance and mainly occurs between meals, as after 12-18 hours of fasting the liver is most depleted of glycogen.
Liver Glycogen
These are disorders of glycogen mobilization or deposition. They are inherited, and may lead to death.
Glycogen Storage disorders.
