FST 100A Midterm 1

Question 1

Role of carbohydrate

Answer 1

structure, short term energy storage, long term in plants

Question 2

Define aliphatic compound

Answer 2

a compound of carbons and hydrogens that are non-aromatic (can be linear, rings, branched)

Question 3

What are the aliphatic compounds for carbohydrate?

Answer 3

ketones and aldehydes

Question 4

What are some carbohydrate foods?

Answer 4

sugar, starch, gum, fiber

Question 5

How does an aldehyde look like?

Answer 5

ROH

Question 6

How does a ketone look like?

Answer 6

ROR’

Question 7

What are the classes of carbohydrates and an example?

Answer 7

Monosaccharides (sugar), Disaccharides (sugar), Oligosaccharides (prebiotic), Polysaccharides (thickeners)

Question 8

What’s the name of monosaccharides that consist of ketone and aldehyde?

Answer 8

ketose, aldose

Question 9

What determines the class of carbohydrate?

Answer 9

Number of glycose units (# of monosaccharides)

Question 10

Is glucose an aldose or ketose?

Answer 10

Aldose

Question 11

Is fructose an aldose or ketose?

Answer 11

Ketose

Question 12

What’s an anomeric compound?

Answer 12

C bonded to 2 O’s

Question 13

At what type of carbon do reactions take place?

Answer 13

anomeric carbon

Question 14

What’s the difference between hexose and pyranose?

Answer 14

Hexose - open
Pyranose - closed (ring)

Question 15

What’s the difference between hexose and hexulose

Answer 15

Hexose - 6 carbons
Hexulose - Ketose