Complex Carbohydrates Trivia Questions and Answers

clear drinking glass with ice cubes

1: What two simple sugars make up lactose?
A: Glucose and Fructose
B: Glucose and Galactose
C: Glucose and Sucrose
D: Glucose and Ribose
Correct Answer: B
Explanation: Lactose is made of glucose and galactose.

2: In carbohydrates, what is the typical hydrogen to oxygen ratio?
A: 1:1
B: 2:1
C: 3:1
D: 4:1
Correct Answer: B
Explanation: Carbohydrates usually have twice as many hydrogen atoms as oxygen atoms.

3: Which of these is not a carbohydrate even though it fits the basic formula?
A: Uronic acids
B: Formaldehyde
C: Deoxy-sugars
D: Cellulose
Correct Answer: B
Explanation: Formaldehyde fits the formula but isn’t considered a carbohydrate.

4: What suffix do sugar names usually end with?
A: -ine
B: -ose
C: -ase
D: -ate
Correct Answer: B
Explanation: Sugar names like glucose and fructose end in -ose.

5: Which carbohydrate is used to build plant cell walls?
A: Starch
B: Glycogen
C: Cellulose
D: Chitin
Correct Answer: C
Explanation: Cellulose is used to build plant cell walls.

6: What is the sugar in DNA called?
A: Ribose
B: Glucose
C: Deoxyribose
D: Fructose
Correct Answer: C
Explanation: Deoxyribose is the sugar in DNA.

7: Which carbohydrate is the main energy store in cereals like rice and wheat?
A: Cellulose
B: Fructose
C: Starch
D: Lactose
Correct Answer: C
Explanation: Starch is the main energy store in cereals.

8: What is the common table sugar called?
A: Lactose
B: Maltose
C: Sucrose
D: Cellobiose
Correct Answer: C
Explanation: Table sugar is sucrose.

9: Which fiber helps maintain a healthy digestive system but isn’t digestible by humans?
A: Starch
B: Sucrose
C: Cellulose
D: Glycogen
Correct Answer: C
Explanation: Cellulose aids digestion but isn’t digested by humans.

10: What is the sugar found in RNA?
A: Ribose
B: Glucose
C: Fructose
D: Galactose
Correct Answer: A
Explanation: Ribose is found in RNA.

11: Into what simpler sugar does starch break down?
A: Fructose
B: Glucose
C: Lactose
D: Sucrose
Correct Answer: B
Explanation: Starch breaks down into glucose.

12: What enzymes break down lactose?
A: Lactase
B: Amylase
C: Maltase
D: Sucrase
Correct Answer: A
Explanation: Lactase breaks down lactose.

13: How are glucose molecules connected in cellulose?
A: Alpha-1,4
B: Beta-1,4
C: Alpha-1,6
D: Beta-1,6
Correct Answer: B
Explanation: Cellulose has beta-1,4 linkages.

14: Why are oligosaccharides important?
A: They are simplest sugars
B: They have high glycemic index
C: They provide dietary fiber
D: They consist of amino acids
Correct Answer: C
Explanation: Oligosaccharides contribute to dietary fiber.

15: What is released when two sugars form a glycosidic bond?
A: Amino acid
B: Water
C: ATP
D: Carbon dioxide
Correct Answer: B
Explanation: Water is released during glycosidic bond formation.

16: What units make up chitin?
A: Glucose
B: Galactose
C: N-acetyl glucosamine
D: Fructose
Correct Answer: C
Explanation: Chitin is made of N-acetyl glucosamine units.

17: Which dietary fiber carbohydrate is not digestible but aids our digestive system?
A: Starch
B: Cellulose
C: Fructose
D: Glycogen
Correct Answer: B
Explanation: Cellulose isn’t digestible but helps with digestion.

18: What do animals, including humans, use to store carbohydrate energy?
A: Starch
B: Glycogen
C: Cellulose
D: Fructans
Correct Answer: B
Explanation: Animals store energy as glycogen.

19: What pathway breaks down glucose for energy?
A: Glycolysis
B: Photosynthesis
C: Gluconeogenesis
D: Lipogenesis
Correct Answer: A
Explanation: Glycolysis breaks down glucose for energy.

20: What is the main sugar in honey?
A: Fructose
B: Sucrose
C: Lactose
D: Glucose
Correct Answer: D
Explanation: Honey mainly contains unbound glucose.

21: What is the main form of carbohydrate storage in plants?
A: Glycogen
B: Cellulose
C: Starch
D: Fructose
Correct Answer: C
Explanation: Plants store carbohydrates mainly as starch.

22: What sugar is commonly referred to as “fruit sugar”?
A: Glucose
B: Sucrose
C: Lactose
D: Fructose
Correct Answer: D
Explanation: Fructose is often called fruit sugar.

23: What type of bond links monosaccharides in disaccharides?
A: Hydrogen bond
B: Ionic bond
C: Glycosidic bond
D: Peptide bond
Correct Answer: C
Explanation: A glycosidic bond links monosaccharides in disaccharides.

24: Which carbohydrate is critical for energy metabolism in nearly all organisms?
A: Fructose
B: Glucose
C: Lactose
D: Sucrose
Correct Answer: B
Explanation: Glucose is a key energy source for most organisms.

25: What is the main function of glycogen in animals?
A: Structural support
B: Energy transport
C: Energy storage
D: Protein synthesis
Correct Answer: C
Explanation: Glycogen stores energy in animals.

26: What is the main carbohydrate found in milk?
A: Glucose
B: Fructose
C: Lactose
D: Sucrose
Correct Answer: C
Explanation: Lactose is the main carbohydrate in milk.

27: Which type of macromolecule is chitin primarily composed of?
A: Proteins
B: Lipids
C: Carbohydrates
D: Nucleic acids
Correct Answer: C
Explanation: Chitin is a carbohydrate.

28: Which sugar is the primary component of table sugar?
A: Glucose
B: Fructose
C: Sucrose
D: Ribose
Correct Answer: C
Explanation: Table sugar is sucrose.

29: What carbohydrate is a major energy source for cells and produced during photosynthesis?
A: Lactose
B: Fructose
C: Glucose
D: Ribose
Correct Answer: C
Explanation: Glucose is produced during photosynthesis and serves as energy for cells.

30: Which type of sugar can be absorbed directly into the bloodstream?
A: Polysaccharides
B: Monosaccharides
C: Disaccharides
D: Oligosaccharides
Correct Answer: B
Explanation: Monosaccharides can be absorbed directly into the bloodstream.

31: What component of starch consists of long unbranched chains of glucose?
A: Amylopectin
B: Glycogen
C: Amylose
D: Cellulose
Correct Answer: C
Explanation: Amylose is an unbranched component of starch.

32: What type of sugar is found in RNA?
A: Deoxyribose
B: Glucose
C: Ribose
D: Fructose
Correct Answer: C
Explanation: Ribose is the sugar found in RNA.

33: What is the chemical formula for glucose?
A: C6H12O6
B: C12H22O11
C: CH2O
D: C5H10O5
Correct Answer: A
Explanation: The chemical formula for glucose is C6H12O6.

34: Which polysaccharide is used for energy storage in animals?
A: Starch
B: Cellulose
C: Glycogen
D: Fructans
Correct Answer: C
Explanation: Glycogen is used for energy storage in animals.

35: What type of carbohydrate can be broken down into glucose but is not digestible by humans?
A: Glycogen
B: Cellulose
C: Starch
D: Amylopectin
Correct Answer: B
Explanation: Cellulose breaks down into glucose but is not digestible by humans.

36: Which sugar is known as “milk sugar”?
A: Lactose
B: Sucrose
C: Fructose
D: Glucose
Correct Answer: A
Explanation: Lactose is commonly known as milk sugar.

37: What carbohydrate is a component of plant cell walls?
A: Glycogen
B: Amylopectin
C: Cellulose
D: Maltose
Correct Answer: C
Explanation: Cellulose is a component of plant cell walls.

38: What is the simplest form of carbohydrate?
A: Polysaccharides
B: Disaccharides
C: Oligosaccharides
D: Monosaccharides
Correct Answer: D
Explanation: Monosaccharides are the simplest form of carbohydrate.

39: Which of these is a storage form of carbohydrate in liver and muscle?
A: Starch
B: Glycogen
C: Cellulose
D: Fructose
Correct Answer: B
Explanation: Glycogen is stored in the liver and muscles.

40: How many carbon atoms does glucose contain?
A: 3
B: 4
C: 5
D: 6
Correct Answer: D
Explanation: Glucose contains 6 carbon atoms.

41: What carbohydrate serves as the main source of energy for brain function?
A: Fructose
B: Glucose
C: Lactose
D: Sucrose
Correct Answer: B
Explanation: Glucose is the main energy source for the brain.

42: Which carbohydrate is used for structural support in arthropods and fungi?
A: Starch
B: Cellulose
C: Glycogen
D: Chitin
Correct Answer: D
Explanation: Chitin provides structural support in arthropods and fungi.

43: What is the common name for disaccharide composed of glucose and galactose?
A: Lactose
B: Sucrose
C: Maltose
D: Cellobiose
Correct Answer: A
Explanation: Lactose is composed of glucose and galactose.

44: Which sugar is often referred to as “blood sugar”?
A: Sucrose
B: Glucose
C: Fructose
D: Lactose
Correct Answer: B
Explanation: Glucose is commonly referred to as blood sugar.

45: What sugar is found in high amounts in fruits and honey?
A: Sucrose
B: Lactose
C: Fructose
D: Galactose
Correct Answer: C
Explanation: Fructose is found in high amounts in fruits and honey.

46: What type of linkage connects glucose units in glycogen?
A: Alpha-1,4 and Alpha-1,6
B: Beta-1,4
C: Alpha-1,4
D: Beta-1,6
Correct Answer: A
Explanation: Glycogen has both Alpha-1,4 and Alpha-1,6 linkages.

47: Which carbohydrate is used as a quick energy source in plants and humans?
A: Lactose
B: Cellulose
C: Starch
D: Sucrose
Correct Answer: C
Explanation: Starch serves as a quick energy source in plants and humans.

48: What is the primary carbohydrate used in the glycolysis pathway?
A: Fructose
B: Glucose
C: Lactose
D: Sucrose
Correct Answer: B
Explanation: Glucose is the primary carbohydrate in glycolysis.

49: What sugar is involved in energy production and also found in DNA?
A: Glucose
B: Fructose
C: Ribose
D: Deoxyribose
Correct Answer: D
Explanation: Deoxyribose is found in DNA.

50: Which carbohydrate is used in the fermentation process by microorganisms?
A: Lactose
B: Sucrose
C: Fructose
D: Glucose
Correct Answer: D
Explanation: Glucose is commonly used in fermentation.

51: What type of carbohydrate consists of branched glucose molecules and is more quickly metabolized?
A: Cellulose
B: Amylopectin
C: Glycogen
D: Fructans
Correct Answer: B
Explanation: Amylopectin is a branched carbohydrate that is quickly metabolized.

52: What carbohydrate is essential for the bacterial balance in the human gut?
A: Glucose
B: Starch
C: Inulin
D: Sucrose
Correct Answer: C
Explanation: Inulin supports beneficial bacteria in the human gut.

53: What is the main sugar carried in the blood and used by cells for energy?
A: Fructose
B: Sucrose
C: Glucose
D: Lactose
Correct Answer: C
Explanation: Glucose is the main sugar carried in the blood.

54: How many grams of energy does one gram of carbohydrate provide?
A: 2 kcal
B: 3 kcal
C: 4 kcal
D: 5 kcal
Correct Answer: C
Explanation: One gram of carbohydrate provides 4 kcal of energy.

55: Which sugar is primarily metabolized in the liver?
A: Glucose
B: Sucrose
C: Fructose
D: Lactose
Correct Answer: C
Explanation: Fructose is primarily metabolized in the liver.

56: What type of sugar is sucrose classified as?
A: Monosaccharide
B: Disaccharide
C: Polysaccharide
D: Oligosaccharide
Correct Answer: B
Explanation: Sucrose is a disaccharide.

57: What carbohydrate compound is crucial for DNA replication?
A: Ribose
B: Deoxyribose
C: Glucose
D: Galactose
Correct Answer: B
Explanation: Deoxyribose is crucial for DNA replication.

58: What carbohydrate is stored in significant amounts in the skeletal muscle?
A: Sucrose
B: Glycogen
C: Starch
D: Cellulose
Correct Answer: B
Explanation: Glycogen is stored in significant amounts in skeletal muscles.

59: What is released when glucose is metabolized for energy?
A: Water and Carbon Dioxide
B: Oxygen and Carbon Dioxide
C: Water and Oxygen
D: ATP and Carbon Dioxide
Correct Answer: A
Explanation: Water and carbon dioxide are released when glucose is metabolized.

60: What is the main carbohydrate found in honey?
A: Sucrose
B: Fructose
C: Lactose
D: Glucose
Correct Answer: D
Explanation: Honey primarily contains glucose.

Disclaimer: Please consult a physician before making any changes to your health regimen.

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