Why are enzymes added to biological washing powders?

They break down food and grease stains

Enzymes Challenge – A 10-Question Trivia Quiz

This enzymes challenge covers what enzymes are, active sites, the lock-and-key model, digestive enzymes like amylase and pepsin, how temperature and pH affect enzymes and uses in detergents and food. A 10-question trivia quiz with answers.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Definition
What are enzymes?
Material
Most enzymes are made of what?
Site
Where does the substrate bind on an enzyme?
Model
Which model describes enzymes fitting substrates exactly?
Saliva
Which enzyme in saliva starts breaking down starch?
Stomach
Which enzyme digests protein in the acidic stomach?
Fat
Which enzyme digests fats?
Heat
What happens to most human enzymes at very high temperatures?
Milk
What enzyme do people with lactose intolerance lack enough of?
Detergents
Why are enzymes added to biological washing powders?

Explanations: answer key for all 10 questions

Q1: What are enzymes?
Answer: Biological catalysts
They speed up reactions without being used up.
Q2: Most enzymes are made of what?
Answer: Proteins
Some RNA molecules can also act as enzymes.
Q3: Where does the substrate bind on an enzyme?
Answer: Active site
Its shape matches the substrate.
Q4: Which model describes enzymes fitting substrates exactly?
Answer: Lock and key
Induced fit is a later refinement.
Q5: Which enzyme in saliva starts breaking down starch?
Answer: Amylase
Bread tastes sweet if chewed long.
Q6: Which enzyme digests protein in the acidic stomach?
Answer: Pepsin
It works best at low pH.
Q7: Which enzyme digests fats?
Answer: Lipase
Bile helps by breaking up fat droplets.
Q8: What happens to most human enzymes at very high temperatures?
Answer: They denature
Their shape is destroyed.
Q9: What enzyme do people with lactose intolerance lack enough of?
Answer: Lactase
It digests milk sugar.
Q10: Why are enzymes added to biological washing powders?
Answer: They break down food and grease stains
They work at lower temperatures.

Enzymes Challenge – Nature's Catalysts

Enzymes are proteins that speed up chemical reactions in living things. Without them, reactions like digestion and respiration would be far too slow to sustain life. Each enzyme has an active site shaped to fit a particular substrate.

Enzymes work best at certain temperatures and pH levels. Human enzymes usually prefer about 37 °C, while stomach enzymes like pepsin work in strong acid. Too much heat denatures enzymes, changing their shape so they stop working.

People use enzymes in many ways: in washing powders, cheese making, brewing, medicines and diagnostic tests. Studying enzymes also helps scientists design drugs that block harmful reactions.

What This Quiz Teaches

This challenge is for students learning about enzymes.

What enzymes are
What active sites do
Which enzymes digest food
How heat affects enzymes
How enzymes are used

Did You Know?

Rennet enzymes help make cheese.
Fireflies glow using the enzyme luciferase.
Pineapple contains enzymes that tenderize meat.
Some bacteria have heat-resistant enzymes.
Enzyme names often end in -ase.