About Carbohydrates

Following are some of the multiple choice questions on the Carbohydrates with answers that will help the students in developing their knowledge.

Carbohydrates MCQ

1. What atoms make up all carbohydrates?

  • Carbon, Sulfur, Hydrogen
  • Carbon, Oxygen, Phosphorus
  • Carbon, Oxygen, Nitrogen
  • Carbon, Oxygen, Hydrogen

2. These are all properties of a disaccharide EXCEPT:

  • made up of two sugars
  • sucrose
  • 2 monosaccharides joined by dehydration synthesis
  • ratio of 1:2:1

3. These are all properties of a monosaccharide EXCEPT:

  • simple sugar
  • 1:2:1 ratio
  • double sugar
  • used for energy

4. What two groups are removed from monosaccharides to form disaccharides or polysaccharides

  • water and oxygen
  • hydrogen and hydroxyl group
  • carbon and hydrogen
  • water and carbon

5. How do the number of H atoms compare to the number of O atoms in a carbohydrate?

  • There are TWICE as many H
  • They are the same amount
  • There are THREE times as many H
  • There are TWICE as many O

6. Which foods do not contain natural sugar?

  • apple
  • milk
  • strawberry
  • none of the above

7. Which polysaccharide is used by plants to store glucose?

  • glycogen
  • cellulose
  • starch
  • chitin

8. Starch is an example of a polysaccharide found in plants. What is the monomer of starch (Hint: it is an example of a monosaccharide)?

  • sucrose
  • glucose
  • glycogen
  • lactose

9. Which polysaccharide is used by plants to make their cell wall?

  • starch
  • glycogen
  • cellulose
  • chitin

10. Important to the structural integrity of plant cells, this is the single most popular polysaccharide in the world.

  • Starch
  • Glycogen
  • Cellulose
  • Chitin

11. Polymers form when a single water molecule is removed from between two monomers

  • Dehydration synthesis
  • Hydrolysis 

12. Molecules that occur naturally in living organisms.

  • Biomolecules
  • Compounds
  • Organics
  • Inorganics

13. How many categories of carbohydrates are there?

  • 1
  • 2
  • 3
  • There are no categories

14. Makes up the plants cell wall and is fiber in our diets

  • Starch
  • Glycogen 
  • Cellulose
  • all of the above

15. Carbohydrtaes are made up of

  • CHO
  • CHON
  • CHONS
  • CHONPS

16. Sucrose (table sugar) Lactose (Milk Sugar) Maltose (Grain sugar) are examples of

  • polysaccharides 
  • monosaccarides 
  • disaccharides
  • all of the above

17. Which health problems is a consequence of eating too much added sugar?

  • overweight
  • heart disease
  • diabetes
  • all of the above

18. Which is not a chemical element needed to build sugars?

  • Carbon
  • Oxygen
  • Nitrogen
  • Hydrogen

19. Carbohydrates are the first source of _______ for the body?

  • repair
  • hygiene
  • fuel
  • None of these

20. What two monosaccharides make up maltose?

  • glucose + galactose
  • glucose + glucose
  • glucose + fructose
  • glucose + glycogen

21. Which polysaccharide makes up the exoskeleton of insects?

  • cellulose
  • starch
  • chitin
  • glycogen

22. What is the polysaccharide used by animals to store glucose?

  • glycogen
  • fructose
  • starch
  • cellulose

23. Which monosaccharide is the sweetest?

  • glucose
  • fructose
  • galactose
  • sucrose

24. What makes up the disaccharide sucrose?

  • glucose + glucose
  • glucose + fructose
  • glucose + galactose
  • glucose + maltose

25. Lactose is composed of

  • glucose + fructose
  • glucose + glucose
  • glucose + sucrose
  • glucose + galactose

26. Which of the following is NOT a monosaccharide?

  • starch
  • fructose
  • glucose
  • galactose

27. What is the monomer of carbohydrates

  • disaccharides
  • monosaccharides
  • amino acids
  • fatty acids

28. Which has more energy, 1.0 g of carbohydrate or 1.0 g of lipid?

  • Carbohydrate
  • Lipid

29. What is not a type of carbohydrate?

  • Fat
  • Fiber
  • Starch
  • Sugar

30. Sugars all end with what three letter ending?

  • -ote
  • -ate
  • -ase
  • -ose

31. Carbohydrates are comprised of Carbon, Hydrogen, Oxygen, and Nitrogen

  • True
  • False

32. A single unit of sugar is referred to as:

  • Monosaccharide
  • Monocarbohydrate
  • Mononutrient
  • Monopolymer

33. Carbohydrates yield how many Calories per gram?

  • 0 Cal/gram
  • 9 Cal/gram
  • 4 Cal/gram
  • 2.25 Cal/gram

34. The scientific name for table sugar is ___

  • lactose
  • sucrose
  • galactose
  • glucose

35. C6H12O6 is the molecular formula for what carbohydrate?

  • Sucrose
  • Glucose
  • Fructose
  • Both glucose and fructose

36. The 3 categories of carbohydrates are:

  • Monosaccharide, disaccharide, polysaccharide
  • glucose, fructose, galatose
  • starch, cellulose, chitin
  • There are no categories of carbohydrates

37. Which of these are examples of carbohydrates?

  • DNA, RNA
  • Fats, hormones
  • amino acids
  • starches, glucose, chitin

38. All carbohydrate names end with which ending:

  • ise
  • ase
  • ese
  • ose

39. Which do all carbohydrates do for us?

  • provide energy
  • make muscle
  • make brains
  • make hair

40. How many sugar units make up polysaccharides?

  • one
  • two
  • more than two
  • zero

41. The process of removing water in order to form a bond between monomers is called....

  • Dehydration Synthesis
  • Hydrolysis

42. The process of digesting a polysaccharide into individual monosaccharides is called....

  • Dehydration Synthesis
  • Hydrolysis

43. The process of breaking the bonds within a starch molecule in order to release glucose molecules is called......

  • Dehydration Synthesis
  • Hydrolysis

44. Some carbohydrate foods are ________

  • fruits
  • grains
  • vegetables
  • all the above

45. The process of adding water in order to break bonds within a polymer....

  • Dehydration Synthesis
  • Hydrolysis

46. How many sugar units make up disaccharides?

  • one
  • two
  • three
  • zero

47. How many sugar units make up monosaccharides?

  • one
  • two
  • three
  • zero

48. Stored in the liver

  • Starch
  • Glycogen 
  • Cellulose
  • none of the above

49. Found in fruits, vegetables, grains, potatoes, pasta, breads.

  • Starch
  • Glycogen 
  • Cellulose
  • none of the above

50. ______+_____= Maltose

  • glucose + glucose
  • glucose+ fructose
  • glucose + galactose
  • Both A and B

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