$$C_n(H_2O)_n$$,\ \text{where}\ n \geq 3$

Question 1

Which of the following is the general formula for a simple carbohydrate (monosaccharide) with $$n$$ carbon atoms, where $$n \geq 3$$?

Accepted Answer

$$C_n(H_2O)_n$$,\ 	ext{where}\ n \geq 3$

Question 2

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

Accepted Answer

Aldoses have an aldehyde group at C1, while ketoses have a ketone group at C2.

Question 3

Which of the following is a correct classification for a monosaccharide with five carbon atoms?

Accepted Answer

Pentose

Question 4

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

Accepted Answer

Catalysis of metabolic reactions

Question 5

Which statement about glycosidic bonds is TRUE?

Accepted Answer

They are formed by condensation reactions, releasing water.

Question 6

Which of the following is a disaccharide formed by linking two monosaccharides?

Accepted Answer

Maltose

Question 7

What is the main difference between homopolysaccharides and heteropolysaccharides?

Accepted Answer

Homopolysaccharides are made of one type of monomer, while heteropolysaccharides are made of more than one type.

Question 8

Which of the following is a correct example of a triose?

Accepted Answer

D-Glyceraldehyde

Question 9

Which of the following statements about the structure of glucose is correct?

Accepted Answer

Glucose is a hexose with an aldehyde group at C1.

Question 10

Which of the following is the correct formula for D-glucose?

Accepted Answer

$$C_6H_{12}O_6$

Question 11

Which of the following is a correct description of an epimer?

Accepted Answer

Epimers are isomers that differ at only one specific asymmetric carbon.

Question 12

Which of the following is a correct example of a ketose sugar?

Accepted Answer

Dihydroxyacetone

Question 13

Which of the following is a correct statement about the classification of monosaccharides based on the number of carbon atoms?

Accepted Answer

A monosaccharide with three carbons is called a triose.

Question 14

Which of the following is a correct statement about the numbering of carbon atoms in monosaccharides?

Accepted Answer

The carbonyl group should be assigned the lowest possible number.

Question 15

Which of the following is NOT a property of monosaccharides?

Accepted Answer

They are always branched polymers.

Question 16

Which of the following is a correct example of a monosaccharide derivative?

Accepted Answer

Glucosamine

Question 17

Which of the following is a correct statement about the formation of glycosidic bonds?

Accepted Answer

Glycosidic bonds are formed by the removal of water (condensation) between two monosaccharides.

Question 18

Which of the following is a correct description of an oligosaccharide?

Accepted Answer

A compound formed by linking several monosaccharides together, typically 2-20 units.

Question 19

Which of the following is a correct statement about the stereochemistry of monosaccharides?

Accepted Answer

Monosaccharides can have chiral centers and exist as enantiomers.

Question 20

Which of the following is a correct statement about the function of carbohydrates in cell adhesion?

Accepted Answer

Glycoproteins, which contain carbohydrate chains, are involved in cell adhesion.

Monosaccharides and Carbohydrate Fundamentals

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