Ring Structure

Question 1

What type of bond is w/in the ring structure of ALDOSE MONOSACCHARIDES

Answer 1

Hemiacetal bond (alcohol bonded to an aldehyde)

Question 2

What type of bond is w/in the ring structure of METOSE MONOSACCHARIDES

Answer 2

Hemiketal bond (alcohol bonded to a ketone)

Question 3

What is the name of a 6 member ring

Answer 3

Pyranose

Question 4

What sugars form a pyranose

Answer 4

Glucose, Mannose, Galactose

Question 5

What is the name of a 5 member ring

Answer 5

Furanose

Question 6

What sugars form a Furanose

Answer 6

Fructose, Ribose

Question 7

Define ANOMERIC CARBON

Answer 7

Carbon in the hemiacetal/hemiketal bond

Question 8

If the OH is UP on the ANOMERIC C, it’s labeled

Answer 8

Beta

Question 9

If the OH is DOWN on the ANOMERIC C, it’s labeled

Answer 9

Alpha

Question 10

Circle the ANOMERIC C and name the compound

Answer 10

Question 11

Define a REDUCING SUGAR

Answer 11

Turns Benedict’s solution blue -> red

Question 12

What does a reducing sugar indicate

Answer 12

Presence of an unbounded anomeric C