
Exploring Carbohydrates and Their Functions

Quiz
•
others
•
12th Grade
•
Hard
Standards-aligned
Michelle McCluggage
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following best describes the structure of a carbohydrate molecule?
A chain of amino acids linked by peptide bonds
A chain of nucleotides linked by phosphodiester bonds
A chain of monosaccharides linked by glycosidic bonds
A chain of fatty acids linked by ester bonds
Answer explanation
Carbohydrates are composed of monosaccharides, which are simple sugars. These monosaccharides are linked together by glycosidic bonds to form larger carbohydrate molecules, making this the correct description.
Tags
DOK Level 3: Strategic Thinking
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Sucrose
Glucose
Cellulose
Starch
Answer explanation
The molecular formula C6H12O6 corresponds to glucose, a common monosaccharide. Sucrose is a disaccharide, while cellulose and starch are polysaccharides, making glucose the correct choice.
Tags
DOK Level 3: Strategic Thinking
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which functional group is commonly found in carbohydrates and is responsible for their solubility in water?
Carboxyl group
Hydroxyl group
Amino group
Phosphate group
Answer explanation
The hydroxyl group (-OH) is a functional group commonly found in carbohydrates. Its presence increases the solubility of carbohydrates in water due to hydrogen bonding, making it essential for their biological functions.
Tags
DOK Level 3: Strategic Thinking
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Explain how the structure of cellulose contributes to its function in plant cell walls.
The branched structure allows for easy storage and quick energy release.
The linear, unbranched structure forms strong fibers that provide rigidity.
The helical structure allows for compact storage in plant cells.
The globular structure makes it soluble in water for easy transport.
Answer explanation
The linear, unbranched structure of cellulose allows it to form strong fibers through hydrogen bonding, providing rigidity and structural support to plant cell walls, which is essential for maintaining plant shape and resisting external pressures.
Tags
DOK Level 3: Strategic Thinking
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following polysaccharides is primarily used for energy storage in animals?
Cellulose
Glycogen
Starch
Chitin
Answer explanation
Glycogen is the primary polysaccharide used for energy storage in animals, stored mainly in the liver and muscles. In contrast, cellulose is a structural component in plants, starch is used for energy storage in plants, and chitin is found in exoskeletons.
Tags
DOK Level 3: Strategic Thinking
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is a disaccharide formed from two glucose molecules?
Lactose
Sucrose
Maltose
Fructose
Answer explanation
Maltose is a disaccharide formed from two glucose molecules. In contrast, lactose is made from glucose and galactose, sucrose from glucose and fructose, and fructose is a monosaccharide.
Tags
DOK Level 3: Strategic Thinking
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Describe the role of chitin in the biological systems where it is found.
It serves as an energy storage molecule in plants.
It provides structural support in the exoskeletons of arthropods.
It acts as a transport molecule in the bloodstream.
It functions as a signaling molecule in cellular communication.
Answer explanation
Chitin is a key structural component in the exoskeletons of arthropods, providing rigidity and protection. It is not involved in energy storage, transport, or signaling, making the second choice the correct answer.
Tags
DOK Level 3: Strategic Thinking
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