Lecture 21 Flashcards Preview

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Flashcards in Lecture 21 Deck (16):
1

Homoglycans

polysaccharides assembled from all the same sugar

2

Heteroglycans

polysaccharides assembled from different sugars

3

What are the different roles of carbohydrates

-energy and fuel for cells (glucose as immediate energy source) -energy storage for cells (polysaccharides, starch & glycan used for this) -structural elements in the cell (plant cell was, arthropod exoskeletons) -metabolic intermediates -part of backbone structure for nucleotides (polynucleotides)

4

Monosaccharide molecules

consist of two families: -aldoses-contain one aldehyde group and hydroxyl groups -ketoses-contain one ketone group and hydroxyl groups

5

L isomer

has the OH group on the Left

6

D isomer

Has the OH group on the right

7

Draw D-Glyceraldehyde

8

Draw D-Erythrose

9

D-Ribose

10

Draw D-Glucose

11

Draw D-Manose

12

Draw D-Galactose

13

Draw Dihydroxyacetone

14

Draw D-Ribulose

15

Draw D-Xyulose

16

Draw D-Fructose