nutr quiz 2

alpha-amylase randomly cleaves only the alpha (1-4) glycosidic linkage or bond and does not cleave alpha(1-6) glycosidic linkage of starch. Therefore, amylase's action on amylopectin will yield \__________,\____________, and \_________

limit dextrin, maltotriose, maltose

Cellulose, a plant cell wall ingredient cannot be digested and utilized as an energy source for human. This is due to the absence of the enzyme ?

Cellulase

Function of alpha-dextrinase or isomaltase in the small intestine?

to cleave alpha (1-\>6) glycosidic bonds in oligosaccharides

The one of the following is not a oligosaccharide?

xylose

Sucrase cleave sucrose into glucose and fructose via breaking \____________ glycosidic bond

alpha 1-\>2

The anomeric carbon for glucose is \__ and for fructose is \____

1

2

Glut 5, glucose transporter is specific for which of the following monosaccharide

fructose

The peptide hormone that signals GLUT4 transporters to the plasma membrane for glucose absorption is?

Insulin

Glucose tolerance test is done to test?

Body's ability absorb and to maintain glucose level in the blood circulation

The function of glycogenin

acts as a primer for glycogen synthesis and it is also a glycosyl transferase

CHO in America reading

-Main CHO source is from grain products
-CHO main energy source, most available
-Glucose most abundantly consumed, not fructose
-HFCS similar to sugar composition (50% glucose + 50% fructose) and replaces sugar