Lecture 24 - Carbohydrates Flashcards
A natural sweetener; comprised of a glucose and fructose disachharide A. sucrose B. dietary fiber C. starch D. lactose
A. sucrose
Both insoluble and soluble; assists in water retention/GI motility (depending on the type) A. sucrose B. dietary fiber C. starch D. lactose
B. dietary fiber
Disaccharide of glucose and galactose; major dietary carbohydrates of animal origin A. sucrose B. dietary fiber C. starch D. lactose
D. lactose
A nutritional reservoir for plants. It is a polysaccharide of glucose A. Sucrose B. dietary fiber C. starch D. lactose
B. dietary fiber
Fructose
Glucose
Fructose
Ribose
Sucrose
alpha-1,6 linkage of ____ & fructose.
Long chain polysaccharides are attached to a ____ residue on the core protein and are connected by a ____ linkage.
A. Threonine; Gly-Xyl-Xyl
B. Ser; Xyl-Gal-Gal
C. Threonine; Xyl-Gal-Gal
D. Ser- Gly-Xyl-Xyl
B. Ser; Xyl-Gal-Gal
Dihydroxyacetone
Glyceraldehyde
Ribose
Fructose
Glucose
Mannose
Galactose
Sucrose (A-1, B-2)
Lactose (B-1, B-4)
Maltose (alpha 1,4)
a glucose disaccharide
alpha 1,4 on chains
beta 1,6 on branch
Type of isomer?
Anomer
Type of isomer?
Diastereomer (not a mirror image)
Type of isomer?
epimer (several changes at chiral carbons)
Type of isomer?
Enantiomer (non superimposable)
What is the structure of ‘A?’
The structure of ‘B?’
A. Ketose
B. Aldose
These modified sugars are important as modified saccharides. They are used as food additives and are important in lipid synthesis.
A. Sugar alcohols
B. Sugar esters
C. Acidic sugars
D. Acetylated amino sugars
E. Deoxaldose
A. Sugar alcohols
These modified sugars are important as modified saccharides. Used in cell signalling, adhesion, and immune response
A. Sugar alcohols
B. Sugar esters
C. Acidic sugars
D. Acetylated amino sugars
E. Deoxaldose
D. Acetylated amino sugars (glycoproteins/glycolipids)
These modified sugars are important as modified saccharides. Important in DNA synthesis
A. Sugar alcohols
B. Sugar esters
C. Acidic sugars
D. Acetylated amino sugars
E. Deoxaldose
E. Deoxyaldose
These modified sugars are important as modified saccharides. Important in plasma membrane and cellular matrix formation
A. Sugar alcohols
B. Sugar esters
C. Acidic sugars
D. Acetylated amino sugars
E. Deoxaldose
C. Acidic sugars
These modified sugars are important as modified saccharides. Important in formation of CNS gangliosides
A. Sugar alcohols
B. Sugar esters
C. Acidic sugars
D. Acetylated amino sugars
E. Deoxaldose
B. Sugar esters
The core protein Serine and Xyl-Gal-Gal trisaccharide are joined by a(n) ____ linkage.
A. N-linkage
B. Phosphate ester
C. O-linkage
D. Hydrogen-bond
C. O-linkage
GlcNAc residues are linked to Asn by _____ linkages.
A. O-linkages
B. Phosphodiester
C. Hydrogen bond
D. N-linkages
D. N-linked
GlcNAc residues are linked to Ser by _____ linkages.
A. O-linkages
B. Phosphodiester
C. Hydrogen bond
D. N-linkages
A. O-linked
Is fructose an aldose/ketose?
Aldose
Is ribose and aldose or ketose?
Aldose
Is glucose and aldose or ketose?
Aldose
Is mannose an aldose or ketose?
Aldose
Is galactose and aldose or ketose?
Aldose
