Protein
How many essential amino acids must be obtained through food?
9
What part of the egg is responsible for fat
Yolk
Meat with more marbling tends to be more
tender
Which cooking method involves surrounding food with hot, dry air?
Roasting
What natural phenomenon is measured on the Richter scale?
Earthquakes
Which type of protein is missing one or more essential amino acids?
Incomplete proteins
Why should eggs be kept away from strong‑smelling foods?
Because the shell is porous
Cutting meat against the grain reduces the length of what structural component?
muscle fibres
What is the primary purpose of braising?
tenderise tough meat using slow moist heat
What is the only fruit that has its seeds on the outside?
Strawberry
Name one body system that relies on proteins to function properly.
Muscle
Cracking an egg reveals a watery white and a flat yolk. What does this indicate?
the egg is old
What type of connective tissue in meat breaks down into gelatin during cooking?
collagen
What reaction occurs between amino acids and sugars that gives meat a brown crust?
Maillard reaction
Which famous scientist developed the theory of general relativity?
Albert Einstein
What happens to proteins when they are heated and their structure changes permanently?
Denaturation
What kitchen mistake can prevent egg whites from whipping properly, even if everything else is correct?
A greasy bowl or tool
What happens to meat proteins when exposed to high heat too quickly?
they tighten and become tough
Which cooking method uses only steam to apply heat to food?
Steaming
What country invented paper around 2,000 years ago?
China
Name one example of a food combination that can create a complete protein.
rice + beans / hummus + pita / peanut butter + whole grain bread?
When heating custards or sauces, what happens if the protein coagulates too quickly?
Curdling
Which type of cut benefits most from low‑and‑slow cooking?
Tough cuts
Why should meat not go directly from the fridge to high heat cooking?
Causes uneven cooking and tough texture
What galaxy is Earth located in?
The Milky Way Galaxy