Chapter 13 homework

Which of the following compounds are chiral?

2-bromo-2-chlorobutane

Which of the following compounds contains a chiral carbon center?

2-butanol

Which of the following compounds can have stereoisomers?

2-pentene

Which of the following compounds has both cis and trans isomers possible?

6- methyl-3-heptene

In D-glucose, there is___ functional group, and the carbonyl group is at___ when looking at the Fischer projection. In D-fructose, there is ___functional group, and the carbonyl group is at ___ when looking at the Fischer projection.

An aldehyde Carbon 1 a ketone carbon 2

Is isomaltose a mono -, di -, or polysaccharide?

Disaccharide

Which monosaccharide is the sweetest saccharide?

Fructose

Why can't humans digest cellulose?

Humans have an enzyme present in their body, amylase, that hydrolyzes a-1, 4-glycosidic bonds but not the B-1, 4-glycosidic bonds of cellulose.

What functional groups are found in all monosaccharides? Check all that apply.

Hydroxyl group Carbonyl group

How do a- D-glucose and B- D-glucose differ? Match the words in the left column to the appropriate blanks in the sentences on the right.

In a-D-glucose, there is an -OH group on carbon 1 and it is down In B-D-glucose, there is an -OH group on carbon 1 and it is up

Is isomaltose a reducing sugar? Match the words in the left column to the appropriate blanks in the sentences on the right.

Isomaltose is a reducing sugar because at least one ring can form the open chain, which contains the aldehyde functional group to be oxidized.

Is this the a or B isomer of isomaltose? Match the words in the left column to the appropriate blanks in the sentences on the right.

Of the two possible isomers, the a isomer of isomaltose is shown, as the hydroxy group on carbon 1 of the second monosaccharide unit is / below the plane of the ring.

When drawing a Fischer projection of a sugar, the horizontal line represents groups that are

Projecting out of the plane of the drawing towards you

What are the monosaccharides in isomaltose? Check all that apply.

Two a-D-glucose units

For disaccharide shown, give the monosaccharide units produced by hydrolysis, the type of glycosidic bond, and the name of the disaccharide, including a or ß.

When the disaccharide is hydrolyzed, the monosaccharide units that are produced are galactose and glucose. The type of glycosidic bond shown for the disaccharide in this part is B-1,4. The name of the disaccharide including a or B is ß-lactose.

Forr disaccharide b, give the monosaccharide units produced by hydrolysis, the type of glycosidic bond, and the name of the disaccharide, including o or B.

When the disaccharide is hydrolyzed, the monosaccharide units that are produced are two molecules of glucose. The type of glycosidic bond shown for the disaccharide in this part is a - 1,4. The name of the disaccharide including a or B is Q-maltose.

A glycosidic bond connects two monosaccharides to create sucrose (more commonly known as table sugar). Identify the type of glycosidic bond connecting the charides together as well as these two monosaccharides that are found in sucrose.

a,B-1,2-glycosidic bond, a-D-glucose, and ß-D-fructose

What is the glycosidic link in isomaltose?

a-1,6-glycosidic bond