Disaccharides MCQ Quiz With Answers

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Gregorynaomi
G
Gregorynaomi
Community Contributor
Quizzes Created: 1461 | Total Attempts: 888,641
| Attempts: 2,586 | Questions: 10
Please wait...
Question 1 / 10
0 %
0/100
Score 0/100
1. What does "Di" in the word disaccharide mean? 

Explanation

The prefix "di-" in the word disaccharide means "two." A disaccharide is a type of carbohydrate molecule that consists of two sugar units bonded together. The prefix "di-" is commonly used in chemistry to indicate the presence of two identical or similar groups or units in a compound. In the case of disaccharides, it signifies that there are two sugar molecules joined together to form the molecule.

Submit
Please wait...
About This Quiz
Disaccharides MCQ Quiz With Answers - Quiz

What do you know about disaccharides? Can you attempt these disaccharides MCQ quiz questions with answers and score well on this test? Give this disaccharides quiz a try... see moreand check your knowledge about these sugars. A disaccharide is the sugar formed when two monosaccharides (simple sugars) are joined together by a bond. What else do you know about these sugars apart from their definition? Let's check it out with the help of the quiz given below. Start the quiz, then.
see less

2. Which of these reactions favors the breaking down of a double sugar?

Explanation

Hydrolysis is the correct answer because it is a chemical reaction that involves the breaking down of a compound by adding water. In the case of a double sugar, hydrolysis would break it down into its component monosaccharides. Hydrogenation, on the other hand, involves the addition of hydrogen atoms and does not result in the breaking down of a double sugar. Subtraction and addition are not specific chemical reactions and do not provide a clear explanation for the breaking down of a double sugar.

Submit
3. What is the name of the linkage used in joining simple sugars?

Explanation

Glycosidic linkage is the name of the linkage used in joining simple sugars. This type of linkage occurs when a hydroxyl group of one sugar molecule reacts with the anomeric carbon of another sugar molecule, resulting in the formation of a glycosidic bond. This linkage is important in the formation of disaccharides, oligosaccharides, and polysaccharides, as it allows for the formation of complex carbohydrates. Glycosidic linkages can be found in various biological molecules, such as starch, cellulose, and glycogen.

Submit
4. Which of these is not a disaccharide? 

Explanation

Galactose is not a disaccharide. It is a monosaccharide, specifically a hexose sugar, that is commonly found in dairy products. Disaccharides are formed when two monosaccharides are joined together through a glycosidic bond. Maltose, sucrose, and lactose are all examples of disaccharides. Maltose is made up of two glucose molecules, sucrose is composed of glucose and fructose, and lactose consists of glucose and galactose. Therefore, the correct answer is Galactose.

Submit
5. Which of these reactions favors the joining of simple sugars? 

Explanation

Condensation is the correct answer because it refers to a chemical reaction in which two molecules combine to form a larger molecule, with the release of a small molecule like water. In the context of simple sugars, condensation reactions occur when two monosaccharides join together to form a disaccharide, such as glucose and fructose combining to form sucrose. This reaction favors the joining of simple sugars because it allows for the formation of more complex carbohydrates, which are important for energy storage and structural support in living organisms.

Submit
6. Which of these is not an enzyme? 

Explanation

Glucose is a simple sugar (monosaccharide) and not an enzyme. Enzymes are proteins that catalyze biochemical reactions in the body. Sucrose, Maltase, and Lactase are all enzymes involved in the breakdown or synthesis of carbohydrates. However, glucose itself is a carbohydrate and serves as a source of energy in the body.

Submit
7. Which of these is a non-reducing double sugar? 

Explanation

Sucrose is a non-reducing double sugar because it is composed of two monosaccharides, glucose and fructose, joined together by a glycosidic bond. Unlike reducing sugars, sucrose does not have a free aldehyde or ketone group that can undergo oxidation reactions. Therefore, it does not react with Benedict's reagent or Fehling's solution, which are commonly used to test for reducing sugars.

Submit
8. What is another name for a disaccharide? 

Explanation

not-available-via-ai

Submit
9. Which of these is a reducing disaccharide? 

Explanation

Both Maltose and Lactose are examples of reducing disaccharides. A reducing disaccharide has one monosaccharide with a free hemiacetal unit that can act as a reducing aldehyde group. In the case of maltose and lactose, one of the monosaccharide units has a free hemiacetal unit, while the other is involved in the glycosidic bond. Glucose and Galactose, on the other hand, are monosaccharides, not disaccharides.

Submit
10. How many oxygen atoms are there in a disaccharide? 

Explanation

A disaccharide is a molecule composed of two sugar units. Maltose is composed of two glucose molecules. The molecular formula for glucose is C6H12O6. When two glucose molecules combine to form maltose, the molecular formula becomes C12H22O11, representing the union of the two glucose units. In this case, the number of oxygen atoms involved in the formation of the maltose disaccharide is also 11.

Submit
View My Results

Quiz Review Timeline (Updated): Jan 31, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 31, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 07, 2019
    Quiz Created by
    Gregorynaomi
Cancel
  • All
    All (10)
  • Unanswered
    Unanswered ()
  • Answered
    Answered ()
What does "Di" in the word disaccharide mean? 
Which of these reactions favors the breaking down of a double sugar?
What is the name of the linkage used in joining simple sugars?
Which of these is not a disaccharide? 
Which of these reactions favors the joining of simple sugars? 
Which of these is not an enzyme? 
Which of these is a non-reducing double sugar? 
What is another name for a disaccharide? 
Which of these is a reducing disaccharide? 
How many oxygen atoms are there in a disaccharide? 
Alert!

Advertisement