Metabolism: Carbohydrates Flashcards Preview

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Flashcards in Metabolism: Carbohydrates Deck (14)
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1

Draw the structure of glucose and fructose

2

Draw the structure of D-glyceraldehyde

3

Draw the structure of D-Erythrose

4

Draw the structures of the following 5 carbon aldose sugars:

Ribose

Arabinose

Xylose

(How will you remember these?)

Ribose = literally Glyceraldehyde w/ 2 extra carbons

Arabinose: ribose w/ OH and H flipped at C2

Xylose: Ribose w/ OH and H flipped at C3

5

Draw the structures of the following 5 carbon aldose sugars:

Ribose

Arabinose

Xylose

(How will you remember these?)

Ribose = literally Glyceraldehyde w/ 2 extra carbons

Arabinose: ribose w/ OH and H flipped at C2

Xylose: Ribose w/ OH and H flipped at C3

6

Draw the structures of the following 5 carbon aldose sugars:

Ribose

Arabinose

Xylose

(How will you remember these?)

Ribose = literally Glyceraldehyde w/ 2 extra carbons

Arabinose: ribose w/ OH and H flipped at C2

Xylose: Ribose w/ OH and H flipped at C3

7

Draw the structures of the following 6 carbon aldose sugars

Glucose

Mannose

Galactose

 

8

Draw the structures of the following 6 carbon aldose sugars

Glucose

Mannose

Galactose

 

9

Draw the structures of the following 6 carbon aldose sugars

Glucose

Mannose

Galactose

 

10

Which 3 carbon ketose sugar is this? 

11

Below is the structure of ___, which can become ___ when phosphorylated at C6.

Fructose

F6P

12

What intermediates can aldoses and ketoses form that allows them to form polymers?

Aldose: Hemicetal

Ketose: Hemiketal

13

Define a reducing sugar

One that can be oxidized back to its chair conformation

14

How do you form a glycosidic bond? How do you break a glycosidic bond?

 

Condensation reaction to form a glycosidic bond

Hydrolysis reaction to break the glycosidic bond