Question 1

Which of the following best describes the general formula for a monosaccharide?

Accepted Answer

$$C_nH_{2n}O_n ($$where n = 3-7)

Question 2

Which type of glycosidic bond is found at the branch points of glycogen?

Accepted Answer

$$\alpha-1$$,6-glycosidic bond

Question 3

Which of the following carbohydrates is the most abundant monosaccharide in nature?

Accepted Answer

Glucose

Question 4

Cellulose and starch are both polysaccharides made from glucose. Which feature distinguishes cellulose from starch?

Accepted Answer

Cellulose has $$\beta-1$$,4-glycosidic bonds, while starch has $$\alpha-1$$,4-glycosidic bonds.

Question 5

Which enzyme is responsible for digesting starch in the human digestive system?

Accepted Answer

Amylase

Question 6

A patient is given a lactose tolerance test. Their blood glucose rises after drinking lactose. What does this indicate?

Accepted Answer

The patient is able to digest lactose into glucose and galactose.

Question 7

Which of the following is a disaccharide composed of glucose and fructose?

Accepted Answer

Sucrose

Question 8

What type of reaction joins two monosaccharides together to form a disaccharide?

Accepted Answer

Dehydration synthesis (condensation)

Question 9

Which of the following is NOT a function of carbohydrates in living organisms?

Accepted Answer

Insulating the body to prevent heat loss

Question 10

Which polysaccharide is found in the exoskeletons of insects and crustaceans?

Accepted Answer

Chitin

Question 11

Which of the following statements about glycogen is TRUE?

Accepted Answer

Glycogen is more highly branched than starch.

Question 12

Which suffix is commonly found in the names of monosaccharides?

Accepted Answer

-ose

Question 13

Which of the following is an isomer of glucose?

Accepted Answer

Galactose

Question 14

Which carbohydrate is found in plant cell walls and is not digestible by humans?

Accepted Answer

Cellulose

Question 15

Which of the following best explains why starch is a good energy storage molecule in plants?

Accepted Answer

It is composed of $$\alpha-$$glucose units and can be broken down quickly.

Question 16

Which of the following molecules is a pentose sugar found in RNA?

Accepted Answer

Ribose

Question 17

A student mixes Benedict's reagent with a solution of glucose and heats it. An orange precipitate forms. What does this indicate?

Accepted Answer

Glucose is a reducing sugar and reacts with Benedict's reagent.

Question 18

Which of the following statements about maltose is correct?

Accepted Answer

Maltose is a disaccharide formed from two glucose molecules.

Question 19

Which carbohydrate is used as a storage molecule in animal liver and skeletal muscle?

Accepted Answer

Glycogen

Question 20

Which of the following is a branched polysaccharide found in plants?

Accepted Answer

Amylopectin

Carbohydrates: Structure, Function, and Classification

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