What this quiz covers
Meat is muscle, and muscle is chemistry that keeps changing after slaughter — pigments binding oxygen, proteins unwinding with heat, fats oxidizing into off-flavors. The people who handle meat for a living read those changes the way a mechanic reads an engine. This quiz is built for that literacy: why myoglobin binds oxygen, what heat does to collagen, how nitrates hold a cured color, what a sausage actually is by definition. Get these right and you understand the product; get them wrong and you are guessing at the most expensive raw material in the plant.
The twenty questions pair meat science with modern processing: ISO 14000 and the environment, amino acids by their functional groups, why ohmic heating ignores product size, rickets from calcium and vitamin D deficiency, the bacteria in yoghurt, why freezing preserves, pulsed electric fields breaking cell walls, sesame’s oil content, pectin in citrus peel, what wheat milling separates, controlled atmosphere packaging, the mango as a climacteric fruit, the exact jelly formula, nitrates for color, myoglobin and oxygen, collagen becoming gelatin, folic acid and anaemia, the pascal, and the hedonic scale.
Muscle chemistry meets process engineering
Two threads run through these questions and they keep meeting. One is the muscle itself — myoglobin, collagen, the cured-meat color that nitrates protect. The other is the process around it — ohmic heating that does not care how thick the piece is, pulsed electric fields that punch holes in cell walls, packaging that actively manages its own atmosphere. The exam-style numbers sit at the crossings: 50% oil in sesame, 20–30% pectin in citrus peel, pH 3.1 with 67.5% sugar for a perfect jelly set.
How to use this quiz
You get 20 seconds per question and one attempt at each answer. For the meat questions, picture the muscle: the red of oxymyoglobin, collagen shrinking into gelatin in a slow braise. For the process questions, picture the equipment: the ohmic heater, the PEF chamber, the CAP line with its gas mixers. Concrete images beat abstract definitions every time. Miss a question, build the image, retake the quiz in a few days.
Answer explanations
Worked through the quiz? Here is why each correct answer is correct — the concept behind it, in plain terms.
- ISO 14000 is related to management of
Correct answer: environment — ISO 14000 is the environmental management family — ISO 9000 covers quality, 14000 the environment. - Which of the following compound is characterized by the presence of -NH2 and carboxyl -COOH group
Correct answer: amino acid — An amino group plus a carboxyl group on the same molecule defines an amino acid — protein’s building block. - Which one is not dependent on food product size
Correct answer: ohmic heating — Ohmic heating generates heat inside the food itself, so the heating rate doesn’t depend on the piece’s size — unlike conventional heating, where heat must conduct inward. - The deficiency of calcium and vitamin D in children leads to
Correct answer: rickets — Calcium and vitamin D deficiency in growing children causes rickets — soft, deformed bones; in adults the same deficiency gives osteomalacia. - Yoghurt is a fermented product which contains
Correct answer: bacteria — Yoghurt’s fermentation is bacterial — Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus in the classic pairing. - Freezing of food is a good method of preservation as
Correct answer: all — Freezing preserves because it halts pathogen growth, stops psychrophiles, and slows enzyme reactions — all three at once. - Pulse electric field works by
Correct answer: electric breakdown of cellwall — Pulsed electric field applies microsecond high-voltage pulses that punch pores in microbial cell membranes (electroporation) — killing without heat. - Oil content in sesame seeds is
Correct answer: 50% — Sesame seed is about half oil — roughly 50% — one of the richest oilseeds. - The pectin content is citrus peel is
Correct answer: 20-30% — Citrus peel runs 20–30% pectin on a dry basis — the commercial source of most food pectin. - Milling of wheat is done to
Correct answer: separate endosperm from germ and bran — Wheat milling strips the starchy endosperm away from bran and germ — white flour is essentially pure endosperm. - Controlled Atmospheric Packaging
Correct answer: monitors and controls the gases inside the package — Controlled atmosphere packaging doesn’t just watch the gas mix — it actively maintains it, holding O2 low and CO2 at set levels. - Which of the following is a climacteric fruit
Correct answer: mango — Mango is climacteric — it ripens after harvest with an ethylene-driven respiration surge — unlike orange, grapes, and strawberry. - For optimum jelly preparation which one is correct
Correct answer: pH-3.1; Acid-1%; sugar-67.5% — A proper jelly sets at about pH 3.1 with roughly 1% acid and 67.5% sugar — the pectin network needs all three conditions together. - Which of the following helps to retain color of meat
Correct answer: nitrates — Nitrates (reducing to nitrite) lock meat’s pink cured color as nitrosylmyoglobin — salt alone can’t do it. - Myoglobins binds to which gas in muscles
Correct answer: O2 — Myoglobin is muscle’s oxygen store — it binds O2, giving fresh meat its red oxymyoglobin color. - Heating of collagen leads to formation of
Correct answer: gelatin — Heat unwinds collagen’s triple helix into gelatin — the transformation behind tender braised meat and aspic. - Ground meat with skin around it is called
Correct answer: sausage — Ground meat stuffed in a casing (“skin”) is a sausage by definition — the oldest processed meat there is. - Folic acid deficiency leads to
Correct answer: anaemia — Folate deficiency causes megaloblastic anaemia — oversized, underperforming red blood cells. Pellagra is niacin, scurvy vitamin C, beri-beri thiamine. - Pascal is the unit of meaurement of
Correct answer: pressure — The pascal (N/m²) is the SI unit of pressure — the unit on every retort gauge and vacuum spec. - Hedonic scale is used for
Correct answer: sensory analysis — The 9-point hedonic scale (“like extremely” to “dislike extremely”) is sensory science’s standard liking test.