Carbohydrates

Question 1

The human body by mass is made up of _% carbohydrates

Answer 1

1%

Question 2

-% of our food should come from carbohydrates

Answer 2

45-65%

Question 3

Primary function of carbohydrates

Answer 3

Energy production

Question 4

Building blocks of all carbohydrates

Answer 4

Monosaccharide

Question 5

Also known as sugars

Answer 5

Simple carbohydrates

Question 6

Made up small unit of monosaccharide

Answer 6

Simple carbohydrates

Question 7

They are quick energy source

Answer 7

Simple carbohydrates

Question 8

Where can simple carbohydrates be found

Answer 8

Sugar
Milk
Soda
Added sugars

Question 9

Is the basic source of energy for all living things

Answer 9

Glucose (blood sugar)

Question 10

Is made from sugar beets or sugar cane

Answer 10

Sucrose (table sugar)

Question 11

Sugar found in fruits, honey, and vegetables

Answer 11

Fructose

Question 12

Grain starch broken down into sugar

Answer 12

Maltose

Question 13

Milk sugar

Answer 13

Lactose

Question 14

Supplies longer lasting energy, as well as nutrients and fiber that the body needs

Answer 14

Complex carbohydrates

Question 15

They are made up of sugar molecules that are strung together in long, complex chain

Answer 15

Complex Carbohydrates

Question 16

Where can complex carbohydrates be found

Answer 16

Peas
Beans
Whole grains
Vegetables

Question 17

Polyhydroxy aldehydes or ketones or substances that hydrolize to yield polyhydroxy aldehydes and ketones

Answer 17

Carbohydrates

Question 18

Is the monomer of carbohydrates and cannot be hydrolyzed to simpler carbohydrates

Answer 18

Monosaccharides

Question 19

Can be hydrolyzed to two monosaccharides

Answer 19

Disaccharides

Question 20

Yield to 2-10 monosaccharides

Answer 20

Oligosaccharides

Question 21

Yield > 10 monosaccharides

Answer 21

Polysaccharides

Question 22

2 classifications of monosacchardes

Answer 22

1. Number of Carbon atoms present in the molecule
2. Whether they contain an aldehyde or a ketone group

Question 23

Simplest carbohydrate

Answer 23

Glyceraldehyde

Question 24

All natural occurring sugar are _-sugars

Answer 24

D - sugars

Question 25

Sweetest of all natural sugars

Answer 25

Fructose

Question 26

Shows sugars in their open chain form

Answer 26

Fischer projection

Question 27

Flat cyclicrepresentation of carbohydrates

Answer 27

Haworth projection

Question 28

Are two sugars differing in configuration at a single asymmetric carbon atom

Answer 28

Epimers

Question 29

The interconversion of alpha & beta anomers

Answer 29

Mutarotation

Question 30

Six-membered cyclic form

Answer 30

Pyranose

Question 31

Five-membered cyclic form

Answer 31

Furanose

Question 32

Sugars exist in equilibrium between their open-chair and various closed-chain forms

Answer 32

Ring-chain tautorism

Question 33

A bond that links two monosaccharides together

Answer 33

Glycosidic bond

Question 34

A covalent bond that joins the hemiacetal group of a saccharide molecule and the hydroxyl group of some organic compound

Answer 34

Glycosidic bonds

Question 35

This test is specific for all carbohydrates

Answer 35

Molisch test

Question 36

This test involves a purple ring where monosaccharides give a rapid positive result while disaccharides and polysaccharides react slower

Answer 36

Molisch test

Question 37

This test is used to detect the presence of reducing sugars

Answer 37

Benedict’s test

Question 38

This test is used to distinguish between mono-, di-, and polysaccharides

Answer 38

Barfoed’s test

Question 39

[BARFOED’S TEST] _____ are oxidized by the copper ion solution to form a carboxylic acid and reddish precipitate of copper oxide within three minutes. _____ undergo the same reaction but do so at a slower rate

Answer 39

Reducing monosaccharides Reducing disaccharides

Question 40

This test is used to distinguish between pentose monosaccharides and hexose monosaccharides

Answer 40

Bial’s Test

Question 41

This test uses concentrated hydrochloric acid as a dehydrating acid, orcinol, and traces of ferric chloride as a condensation reagent

Answer 41

Bial’s test

Question 42

[Bial’s test] Furfural reacts with orcinol and iron ion present in the test reagent to produce a _____ product. Meanwhile, hexoses yield a _____ to _____ condensation product

Answer 42

Bluish / green product Muddy brown to gray

Question 43

This test is used to distinguish between aldoses and ketoses

Answer 43

Seliwanoff’s test

Question 44

Uses 6 molars of hydrochloric acid as dehydrating agent and resorcinol as condensation reagent

Answer 44

Seliwanoff’s test

Question 45

Structural component of some living organisms

Answer 45

Carbohydrates

Question 46

What are the 2 trioses

Answer 46

Glyceraldehyde Dihydroxyacetone

Question 47

What’s the difference between fructose and glucose

Answer 47

Functional group (ketose & aldose)

Question 48

Dehydrating acid and condensation reagent in Bial’s test

Answer 48

Dehydrating acid: HCl Condensation reagent: orcinol and traces of ferric chloride

Question 49

Test reagent for Molisch test

Answer 49

Sulfuric acid

Question 50

A test wherein reducing sugars are oxidized by the copper ion in solution to form a carboxylic acid and a reddish precipitate of copper oxide

Answer 50

Benedict’s test

Question 51

Dehydrating agent and condensation reagent of Seliwanoff’s test

Answer 51

Dehydrating agent: 6 molars of HCl Condensation agent: resorcinol