Question 1

Which type of carbohydrate cannot be converted to simpler compounds by hydrolysis?

Accepted Answer

Monosaccharide

Question 2

Monosaccharides with a carbonyl group at C1 are classified as which of the following?

Accepted Answer

Aldoses

Question 3

The majority of the monosaccharides found in nature and in the human body are classified as:

Accepted Answer

Classified as 'D'

Question 4

To determine whether a monosaccharide is D or L, the configuration of the chiral center ______ must be determined.

Accepted Answer

Farthest from the carbonyl group

Question 5

Disaccharides and polysaccharides contain monosaccharide units joined together by which of the following?

Accepted Answer

Glycosidic linkages

Question 6

Which labeled carbon atom in the Haworth projection is the anomeric carbon?

Accepted Answer

D

Question 7

How are the two monosaccharides shown in the first image related?

Accepted Answer

Stereoisomers

Question 8

Which term best describes the relationship between two monosaccharides that differ at only one chiral center?

Accepted Answer

Diastereomers

Question 9

What product forms when an aldose is treated with Benedict's reagent?

Accepted Answer

A carboxylic acid salt

Question 10

What product forms when a monosaccharide is treated with $$\mathrm{H}_2 in $$the presence of a Pd catalyst?

Accepted Answer

An alditol (sugar alcohol)

Question 11

How many chirality centers are present in the compound shown below (refer to a hexose structure)?

Accepted Answer

4

Question 12

Which structure is a three-carbon alditol?

Accepted Answer

A compound with three hydroxyl groups and no carbonyl group

Question 13

Which of the following statements about carbohydrates is TRUE?

Accepted Answer

Carbohydrates serve important energy and structural roles for both plants and animals.

Question 14

Which of the following best describes the relationship between galactose and glucose?

Accepted Answer

Stereoisomers

Question 15

Which product forms when a ketose is treated with Benedict's reagent?

Accepted Answer

A carboxylic acid salt

Question 16

How many acetals and hemiacetals are present in a typical disaccharide?

Accepted Answer

One hemiacetal and one acetal is present.

Question 17

Which of the following is NOT a function of carbohydrates in biological systems?

Accepted Answer

Catalysis of biochemical reactions

Question 18

Which of the following statements about monosaccharides is correct?

Accepted Answer

Monosaccharides create hydrogen bonds with water due to the presence of numerous hydroxyl groups.

Question 19

Which of the following best describes the relationship between D-glucose and L-glucose?

Accepted Answer

Enantiomers

Question 20

Which term describes the linkage formed between two monosaccharides in a disaccharide?

Accepted Answer

Glycosidic bond

Carbohydrate Structure and Isomerism Study Guide

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