Lecture 22 Flashcards Preview

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Flashcards in Lecture 22 Deck (13):
1

IF the anemic carbon then can it further do...

oxidation to acid
-anomeric carbon is reducing

2

anomeric carbon

the carbon that was the carbonyl carbon on the linear model

3

Disaccharides

formed between the anemic carbon of one sugar with any of the hydroxyl groups of the other sugar
-known as alpha or beta anomer

4

lactose

important disaccharide
-sugar found in milk

5

Lactose intolerant

people who lack the enzyme lactase required to hydrolyze lactose to galactopyranose and glucose

6

Sucrose

table sugar
-is a dissacharride
-naturally occurs in many plants, cyanobacteria, but not in animals

7

what is the main sugar of apricots or pineapples

sucrose

8

what is the main sugar of grapes and apples

fructose

9

Homoglycans

-have only one type of sugar

energy storage:
-amylose and amylopectin (starches) in plants
-glcogen in animals

Structural:
-cellulose in plants
-chitin in arthropods

10

Heteroglycans

-have more than one type of sugar

Structural:
-Proteoglycans-macromolecules with one or more polysaccharieds containing glucosamine joined to a protein

Informational
-Glycoproteins-
Glycolipids

11

Glycoproteins

one or several oligosaccharides of varying complexity covalently joined to a protein
-arrangement of sugar units and their modifications constitute identity of elements

12

Glycolipids

membrane sphingolipids in which the hydrophobic head group are complex oligosaccharides

13

What are some examples of homopolysaccharides

amylose
amylopectin
glycogen