Question 1

Which of the following elements is NOT found in the general structure of carbohydrates?

Accepted Answer

Nitrogen

Question 2

What is the general formula for a monosaccharide?

Accepted Answer

$$C_nH_{2n}O_n$$

Question 3

Which of the following is a primary function of carbohydrates in living organisms?

Accepted Answer

Providing energy

Question 4

A carbohydrate with the formula $$C_6H_{12}O_6$ is classified as a:

Accepted Answer

Monosaccharide

Question 5

Which functional group is always present in carbohydrates?

Accepted Answer

Hydroxyl group

Question 6

Given the structure below, what is the generic name for the monosaccharide shown?

$$\mathrm{CH_2OH} - (CHOH)_4 - CHO$$

Accepted Answer

Aldopentose

Question 7

Which step is necessary to assign the generic name to a monosaccharide?

Accepted Answer

Count the number of carbon atoms

Question 8

A carbohydrate with a ketone functional group and six carbon atoms is called a:

Accepted Answer

Ketohexose

Question 9

Which of the following formulas could represent a monosaccharide?

Accepted Answer

$$C_5H_{10}O_5$

Question 10

Which of the following is a correct step in naming a monosaccharide?

Accepted Answer

Identify if the molecule contains an aldehyde or ketone group

Question 11

Which of the following best describes the difference between an aldose and a ketose?

Accepted Answer

An aldose contains an aldehyde group, while a ketose contains a ketone group

Question 12

Which of the following is the correct generic name for a monosaccharide with four carbon atoms and a ketone group?

Accepted Answer

Ketotetrose

Question 13

A patient is diagnosed with a metabolic disorder that prevents the breakdown of $$C_6H_{12}O_6$. Which type of molecule is accumulating in their body?

Accepted Answer

Monosaccharide

Question 14

Which of the following is NOT a step in assigning the generic name to a monosaccharide?

Accepted Answer

Determine the number of nitrogen atoms

Question 15

Which of the following best explains why glucose is classified as an aldohexose?

Accepted Answer

It contains six carbon atoms and an aldehyde group

Question 16

Which of the following is a correct chemical formula for a carbohydrate that could be used as a primary energy source in humans?

Accepted Answer

$$C_6H_{12}O_6$

Question 17

A scientist discovers a sugar with the formula $$C_7H_{14}O_7$. What is the generic name for this monosaccharide if it contains a ketone group?

Accepted Answer

Ketoheptose

Question 18

Which of the following statements about monosaccharides is TRUE?

Accepted Answer

They can exist in straight chain or ring forms

Question 19

Which of the following is the correct order of steps for naming a monosaccharide?

Accepted Answer

Identify aldehyde/ketone group, count carbon atoms, add suffix

Introduction to Carbohydrates: Structure and Nomenclature

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