Chap 10

Question 1

Stereoisomers that are not mirror image of one another are called.
A) enantiomers
B) anomers
C) diastereomers
D) Fischer projections

Answer 1

Answer: C

Question 2

Which of the following properties of an enantiomer does not influence the amount of its rotation of plane polarized light?

A) Temperature
B) wavelength of light
C) Number Of molecules that the light passes through
D)it’s chemical property

Answer 2

Answer: D

Question 3

What are the most commonly found monosaccharides in nature?
A) Those with 4 carbons
B) Those with 5-6 carbons
C) Those with 7-9 carbons 
D) Those with 10 or more carbons

Answer 3

Answer: B

Question 4

Which of the following is a fruit Sugar?
A) D-Glucose
B) Galactose 
C) Lactose
D) D-Fructose

Answer 4

Answer: D

Question 5

D-glucose is often called by other names, such as corn sugar and grape sugar. It is also referred to as \_\_\_\_.
A) dextrose
B) fruit sugar
C) blood sugar
D) dextrose and blood sugar

Answer 5

Answer:D

Question 6

What is mutarotation?
A) The conversion of a D- monosaccharide into a cal-monosaccharide
B) The conversion of a-D-galacose into B-D galactose.
C)The conversion of a pyramided into a furanose
D) The conversion of an Aldose into a ketose

Answer 6

Answer:B

Question 7

Benedict’s reagent is for detecting reducing sugars because
A) a reduction of the sugar occurs producing an acid
B) The aldehyde group in the sugar is oxidized
C)The copper ion in the reagent is oxidized as the sugar is reduced
D) The—OH groups are exchanged for hydrogen’s

Answer 7

Answer:B

Question 8

What are the 3 different categories of monosaccharides?

Answer 8

Monosaccharides, oligosaccharides, polysaccharides

Question 9

What is a D-sugar?

Answer 9

The -OH attached to the chiral carbon atom furthest from the carbonyl points right

Question 10

What is a L-sugar?

Answer 10

It is where the -OH points left

Question 11

What is a stereoisomers?

Answer 11

Stereoisomers are interchanged only by breaking bonds and are important to carbohydrates

Question 12

What is a disastereomers?

Answer 12

They are stereoisomers that are not enantiomers

Question 13

What are Enantiomers?

Answer 13

They are nonsuperimposable mirror image forms of a molecule

Question 14

What is the most common monosaccharide found in nature?

Answer 14

D-Fructose

Question 15

What is Benedict’s reagent?

Answer 15

Is used in a lab to oxidize aldehydes

Question 16

What is the most common sugar?

Answer 16

Alcohol sugars