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Carbohydrates
n/a
51
Biology
Professional
08/14/2010

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Cards

Term
What are the two types of monnosaccharides?
Definition
Aldoses and Ketoses
Term
What is an epimer?
Definition
Differ in configuration of -OH and -H groups on one carbon.
Term
What makes up a hemiacetal?
Definition
Aldehyde and Alcohol group
Term
What makes up a hemiketal?
Definition
Ketone and Alcohol group
Term
[image]
Definition
Glyceraldehyde
Term
What are the C4 aldoses?
Definition
Erythrose and Threose
Term
What are the C5 aldoses?
Definition
Ribose, Arabinose, Xylose, and Lyxose
Term
What are the C6 aldoses?
Definition
Allose, Altrose, Glucose, Mannose, Gulusoe, Innose, Talose
Term
What are enantiomers?
Definition
Mirror images
Term
What makes a carbon anomeric?
Definition
4 different groups attached to it
Term
What is the equation used to figure out how man isomeric forms a compound has?
Definition

2n

n= number of anomeric carbons

Term
What is the common C3 ketose?
Definition
Dihydroxy acetone
Term
What is the common C4 ketose?
Definition
Erytholose
Term
What are the common C5 ketoses?
Definition
Ribulose and Xylulose
Term
What are the common C6 ketoses?
Definition
Psicose, Fructose, Sorbose, Tagetose
Term
What is matutoration?
Definition
The process by which alpha and beta are interconverted
Term
What is the structure for gluconic acid?
Definition

COOH

|

|

|

CH2OH

Term
What is the structure for glucoronic acid?
Definition

CHO

|

|

|

COOH

Term

CH2OH

|

H-C-OH

|

OH-C-H   

|

H-C-OH

|

H-C-OH

|

CH2OH

 

Definition

Sorbitol

 

Term
What is the significance of sorbitol?
Definition
  • Not metabolized in the body
  • Artificial sweetner
Term
What does maltose consist of?
Definition
Glucose (alpha 1--4) Glucose
Term
What does cellulobiose consist of?
Definition
Glucose (Beta 1--4) Glucose
Term
What does lactose consist of?
Definition
Galactose (Beta 1--4) Glucose
Term
What does sucrose consist of? 
Definition
Glucose (Alpha 1--2) Fructose
Term
Why isnt sucrose hydrolyzed in the body?
Definition
B/c in the bonding with glucose, both -OH groups are utilized
Term
What are starches composed of?
Definition
amylose and amylopectin
Term
What percent of starch is amylose and amylopectin?
Definition

Amylose - 15%

Amylopectin - 85%

Term
What is amylose composed of?
Definition
Straight chained glucose with (Alpha 1--4) linkages
Term
What does amylopectin consist of?
Definition
  • Straight Chained (Alpha 1--4)
  • Branched (Alpha 1--6)
Term
What is the difference between amylopectin and glycogen?
Definition
Glycogen contains more Alpha 1--6 linkages
Term
What are dextrans?
Definition
  • Polysaccharides made of glucose linked by: (Alpha 1--6) - mostly, (Alpha 1--4), (Alpha 1--3)
  • A gelatinous polymer made by some bacteria
Term
What is a levan?
Definition
Polysaccharide made of fructose
Term
What is an isomer?
Definition
Compounds having the same chemical formula but different structures
Term
What are optical isomers?
Definition
Compounds having the same chemical formula, but differ only in the substituent group on optically active carbons

ex. D and L glyceraldehyde
Term
What is a racemic mixture?
Definition
Mixture of 50% D and 50%L enantiomers
Term
What is an anomer?
Definition
Stereoisomers which differ in configuration at C-1 of aldoes and C-2 of ketoses

ex. Alpha-D-glucose and Beta-D-Glucose
Term
What is the rule for designating alpha or beta?
Definition
If the -OH group at C-1 is on the same side as the carbon at C-6 then the compound is said to be Beta. If opposite then it is alpha.
Term
What are some properties of sialic acids?
Definition
9-carbon acidic sugar - Wide distribution in vertebrates, Components of glycoproteins and gangliosides (glycolipids N-Acetyl neuraminic Acid (NANA) = sialic acid
Term
What is the storage poly saccharide in animals?
Definition
Glycogen
Term
What is inulin and its uses?
Definition
  • Polysaccharide of frutose with 2-->1 linkages
  • It enters the interstitial space but cannot enter cells. It is used to estimate the size of the interstial space. This is also the basis of its use to measure glomerular filtration rate, a kidney function test.
Term
What does the Extracellular matrix consist of?
Definition
  • Fibrous Proteins
  • Ground substances
  • Adhesion molecules
  • Cells
Term
What are examples of fibrous proteins?
Definition
Collagen, Elastin, Keratin
Term
What are examples of ground substances?
Definition
Proteoglycans
Term
What are some adhesion molecules found in the extracellular matrix?
Definition
  • Fibronectin
  • Laminin
  • Thrombospondin
  • Tenacin
  • Vitronectin
Term
What are some cells found in the extracellular matrix?
Definition
  • Fibroblasts and Mast cells
  • Endothelial and Epithelial cells
  • Other: Chondrocytes in cartilage, Osteoblast in bone, Keratinocytes in skin
Term
What kind of bond exist between a carbohydrate and a protein?
Definition
Covalent
Term
You can find carbohydrates attached to what amino acids?
Definition
  • Asparagine
  • Serine/ Threonine
  • Hydroxylysine (unique to collagen)
Term
What is glycosylation?
Definition
a post-translational modification of newly synthesized proteins
Term
What group of enzyme catalyzes glycosylation?
Definition
Glycosyl transferases
Term
Where does glycosylation begin and where does it end in the cell?
Definition

Begins: ER

Ends: Golgi Apparatus

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