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Table of Contents
Section Topic Question Range
1 Food Chemistry and Biochemistry 1–15
2 Cell Biology and Physiology of Food Organisms 16–25
3 Genetics, Breeding, and Biotechnology 26–45
4 Plant Biology and Crop Production 46–60
5 Animal Biology, Meat, and Dairy 61–75
6 Human Nutrition and Digestion 76–95
7 Metabolism and Energy 96–105
8 Food Microbiology and Fermentation 106–120
9 Food Safety and Foodborne Illness 121–135
10 Food Processing and Preservation 136–145
11 Ecological, Economic, and Political Aspects 146–150
,Section 1: Food Chemistry and Biochemistry
🟢 Question 1: Which of the following best explains why the Maillard reaction produces
different flavour profiles in bread crust versus roasted coffee, despite both involving
reducing sugars and amino groups?
A) The Maillard reaction is non-specific and produces identical volatile compounds in all
foods.
B) The specific amino acids and sugars present, along with pH and temperature,
determine the unique profile of Maillard products formed.
C) Bread crust undergoes caramelization exclusively, while coffee undergoes only
Maillard browning.
D) The reaction in bread is enzymatic, whereas in coffee it is non-enzymatic.
🔴🔴 Correct Answer: B
Rationale: The Maillard reaction is a complex network of reactions whose product
spectrum depends on the reacting sugars, amino acids, water activity, pH, and
temperature; different foods therefore generate distinct flavour and colour compounds.
🟢 Question 2: A food scientist observes that a sugar solution heated to 180 °C turns
brown without any protein present. This observation is most consistent with:
A) The Maillard reaction
B) Enzymatic browning
C) Caramelization
D) Lipid oxidation
🔴🔴 Correct Answer: C
Rationale: Caramelization is the non-enzymatic browning of sugars alone under heat,
whereas the Maillard reaction requires amino compounds.
,🟢 Question 3: Which statement correctly distinguishes amylose from amylopectin in
starch?
A) Amylose is highly branched, while amylopectin is linear.
B) Amylose is linear and tends to form gels, whereas amylopectin is branched and
contributes to viscosity and pasting.
C) Both are composed exclusively of α-1,6-glycosidic bonds.
D) Amylopectin is water-insoluble, while amylose is fully water-soluble.
🔴🔴 Correct Answer: B
Rationale: Amylose is largely linear with α-1,4 linkages and readily retrogrades to form
gels; amylopectin is branched via α-1,6 bonds and is responsible for thickening and
pasting behaviour.
🟢 Question 4: In a scenario where a chef adds lemon juice to a fish marinade to “cook”
the fish without heat (ceviche), the primary biochemical process is:
A) Thermal denaturation of myosin
B) Acid-induced denaturation of muscle proteins
C) Enzymatic hydrolysis of collagen by bromelain
D) Maillard browning of fish proteins
🔴🔴 Correct Answer: B
Rationale: Acid lowers pH and disrupts electrostatic interactions and hydrogen bonds,
causing proteins to unfold and aggregate in a manner resembling heat denaturation.
🟢 Question 5: Which of the following fatty acids is most susceptible to oxidative
rancidity?
A) Stearic acid (18:0)
B) Oleic acid (18:1, cis-9)
C) Linoleic acid (18:2, cis-9,12)
D) Palmitic acid (16:0)
, 🔴🔴 Correct Answer: C
Rationale: The rate of lipid oxidation increases with the number of bis-allylic methylene
groups; linoleic acid has two double bonds and is more susceptible than
monounsaturated or saturated fatty acids.
🟢 Question 6: A food label declares “contains 0 g trans fat.” Which of the following is a
scientifically valid interpretation?
A) The product is guaranteed to be free of all trans fatty acids.
B) The product may contain up to 0.5 g trans fat per serving under many regulatory
rounding rules.
C) Trans fat is impossible to detect analytically.
D) The product must be derived from fully hydrogenated oil.
🔴🔴 Correct Answer: B
Rationale: Regulatory frameworks (e.g., US FDA) permit declaration of 0 g trans fat
when the amount per serving is below 0.5 g, so small amounts may still be present.
🟢 Question 7: Which property of water is most directly responsible for its high latent
heat of vaporization, making it effective for cooking via steam?
A) Its low molecular weight
B) Extensive hydrogen bonding
C) Its nonpolar character
D) Its ability to act as a solvent for lipids
🔴🔴 Correct Answer: B
Rationale: Hydrogen bonding requires substantial energy to break, giving water a high
latent heat of vaporization and making steam an efficient heat-transfer medium.
🟢 Question 8: In the context of food chemistry, “water activity” (a_w) is best defined as:
Table of Contents
Section Topic Question Range
1 Food Chemistry and Biochemistry 1–15
2 Cell Biology and Physiology of Food Organisms 16–25
3 Genetics, Breeding, and Biotechnology 26–45
4 Plant Biology and Crop Production 46–60
5 Animal Biology, Meat, and Dairy 61–75
6 Human Nutrition and Digestion 76–95
7 Metabolism and Energy 96–105
8 Food Microbiology and Fermentation 106–120
9 Food Safety and Foodborne Illness 121–135
10 Food Processing and Preservation 136–145
11 Ecological, Economic, and Political Aspects 146–150
,Section 1: Food Chemistry and Biochemistry
🟢 Question 1: Which of the following best explains why the Maillard reaction produces
different flavour profiles in bread crust versus roasted coffee, despite both involving
reducing sugars and amino groups?
A) The Maillard reaction is non-specific and produces identical volatile compounds in all
foods.
B) The specific amino acids and sugars present, along with pH and temperature,
determine the unique profile of Maillard products formed.
C) Bread crust undergoes caramelization exclusively, while coffee undergoes only
Maillard browning.
D) The reaction in bread is enzymatic, whereas in coffee it is non-enzymatic.
🔴🔴 Correct Answer: B
Rationale: The Maillard reaction is a complex network of reactions whose product
spectrum depends on the reacting sugars, amino acids, water activity, pH, and
temperature; different foods therefore generate distinct flavour and colour compounds.
🟢 Question 2: A food scientist observes that a sugar solution heated to 180 °C turns
brown without any protein present. This observation is most consistent with:
A) The Maillard reaction
B) Enzymatic browning
C) Caramelization
D) Lipid oxidation
🔴🔴 Correct Answer: C
Rationale: Caramelization is the non-enzymatic browning of sugars alone under heat,
whereas the Maillard reaction requires amino compounds.
,🟢 Question 3: Which statement correctly distinguishes amylose from amylopectin in
starch?
A) Amylose is highly branched, while amylopectin is linear.
B) Amylose is linear and tends to form gels, whereas amylopectin is branched and
contributes to viscosity and pasting.
C) Both are composed exclusively of α-1,6-glycosidic bonds.
D) Amylopectin is water-insoluble, while amylose is fully water-soluble.
🔴🔴 Correct Answer: B
Rationale: Amylose is largely linear with α-1,4 linkages and readily retrogrades to form
gels; amylopectin is branched via α-1,6 bonds and is responsible for thickening and
pasting behaviour.
🟢 Question 4: In a scenario where a chef adds lemon juice to a fish marinade to “cook”
the fish without heat (ceviche), the primary biochemical process is:
A) Thermal denaturation of myosin
B) Acid-induced denaturation of muscle proteins
C) Enzymatic hydrolysis of collagen by bromelain
D) Maillard browning of fish proteins
🔴🔴 Correct Answer: B
Rationale: Acid lowers pH and disrupts electrostatic interactions and hydrogen bonds,
causing proteins to unfold and aggregate in a manner resembling heat denaturation.
🟢 Question 5: Which of the following fatty acids is most susceptible to oxidative
rancidity?
A) Stearic acid (18:0)
B) Oleic acid (18:1, cis-9)
C) Linoleic acid (18:2, cis-9,12)
D) Palmitic acid (16:0)
, 🔴🔴 Correct Answer: C
Rationale: The rate of lipid oxidation increases with the number of bis-allylic methylene
groups; linoleic acid has two double bonds and is more susceptible than
monounsaturated or saturated fatty acids.
🟢 Question 6: A food label declares “contains 0 g trans fat.” Which of the following is a
scientifically valid interpretation?
A) The product is guaranteed to be free of all trans fatty acids.
B) The product may contain up to 0.5 g trans fat per serving under many regulatory
rounding rules.
C) Trans fat is impossible to detect analytically.
D) The product must be derived from fully hydrogenated oil.
🔴🔴 Correct Answer: B
Rationale: Regulatory frameworks (e.g., US FDA) permit declaration of 0 g trans fat
when the amount per serving is below 0.5 g, so small amounts may still be present.
🟢 Question 7: Which property of water is most directly responsible for its high latent
heat of vaporization, making it effective for cooking via steam?
A) Its low molecular weight
B) Extensive hydrogen bonding
C) Its nonpolar character
D) Its ability to act as a solvent for lipids
🔴🔴 Correct Answer: B
Rationale: Hydrogen bonding requires substantial energy to break, giving water a high
latent heat of vaporization and making steam an efficient heat-transfer medium.
🟢 Question 8: In the context of food chemistry, “water activity” (a_w) is best defined as:
