2.5 lecture

Question 1

Hemiacetal

Answer 1

Formed between aldehydes

Question 2

Hemiketal

Answer 2

formed between ketones

Question 3

Alpha monomer

Answer 3

Alcohol on C1 is in down position

Question 4

Beta monomer

Answer 4

Alcohol on C1 is in up position

Question 5

Furanose

Answer 5

cyclic ketone sugar rings that form through hemiketal linkage

Question 6

Pyranose

Answer 6

6 membered aldohexose ring compounds, glucose in ring is D-glucopyranose

Question 7

D enantiomer

Answer 7

CH2OH points upward on C6

Question 8

L enantiomer

Answer 8

CH2OH points downward on C6

Question 9

Anomeric carbon

Answer 9

C1

Question 10

Acetal

Answer 10

alcohol group reacts with hemiacetal

Question 11

Ketal

Answer 11

alcohol group reacts with hemiketal

Question 12

Why add branches to chains?

Answer 12

More branches = more ends = faster release of glucose

Question 13

What are structural polysaccharides made from?

Answer 13

Beta linkages

Question 14

What is polysaccharide folding influenced by?

Answer 14

steric factors and hydrogen bonding
-hydrogen bonding is more important

Question 15

Glycosaminoglycans

Answer 15

-have gel like matrix
-lubricates joints
-acid sugar linked to an amino sugar