Q: Which of the following best explains why cellulose cannot be digested by humans?

Humans lack the enzyme to break the $eta$-glycosidic bonds in cellulose

Question 1

Which of the following is the monomer (subunit) of carbohydrates?

Accepted Answer

Monosaccharide

Question 2

What is the typical hydrogen to oxygen ratio found in carbohydrates?

Accepted Answer

$2:1$

Question 3

Which elements are always present in carbohydrates?

Accepted Answer

Carbon, hydrogen, oxygen

Question 4

Which functional group is characteristic of carbohydrates?

Accepted Answer

Hydroxyl group ($-OH$)

Question 5

What type of bond links monosaccharides together to form polysaccharides?

Accepted Answer

Glycosidic bond

Question 6

Which of the following is a correct chemical formula for glucose, a common monosaccharide?

Accepted Answer

$C_6H_{12}O_6$

Question 7

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

Accepted Answer

Catalyzing chemical reactions

Question 8

Which of the following is a disaccharide?

Accepted Answer

Sucrose

Question 9

Cellulose is an important polysaccharide in plants. What is its primary function?

Accepted Answer

Structural support

Question 10

Which of the following best describes the structure of a polysaccharide?

Accepted Answer

A long chain of monosaccharides linked by glycosidic bonds

Question 11

Which carbohydrate is commonly found in animal liver and muscle cells as an energy reserve?

Accepted Answer

Glycogen

Question 12

A patient is diagnosed with lactose intolerance. Which carbohydrate is the patient unable to digest?

Accepted Answer

Lactose

Question 13

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

Accepted Answer

Glucose

Question 14

Which process forms a glycosidic bond between two monosaccharides?

Accepted Answer

Dehydration synthesis

Question 15

Which carbohydrate is the primary energy source for cellular respiration in most organisms?

Accepted Answer

Glucose

Question 16

A food scientist analyzes a sample and finds a carbohydrate with the formula $C_{12}H_{22}O_{11}$. What type of carbohydrate is this?

Accepted Answer

Disaccharide

Question 17

Which of the following statements about starch is TRUE?

Accepted Answer

It is a polysaccharide used for energy storage in plants

Question 18

Which of the following best explains why cellulose cannot be digested by humans?

Accepted Answer

Humans lack the enzyme to break the $eta$-glycosidic bonds in cellulose

Question 19

Which carbohydrate is commonly used as a sweetener in processed foods and is composed of glucose and fructose?

Accepted Answer

Sucrose

Question 20

A biochemist is studying the breakdown of polysaccharides in the human digestive system. Which reaction is responsible for splitting glycosidic bonds?

Accepted Answer

Hydrolysis

Carbohydrates: Structure, Function, and Classification

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