Biology Practice Quiz
Biology Enzyme Quiz
Test your knowledge on enzymes and their fun
Key Features:
- 11 engaging multiple-choice questions
- Focus on enzyme action, tests, and safety precautions
- Immediate feedback on your answers
What is the factor among these that doesn’t affect enzyme action?
Temperature
PH
Pressure
Enzyme concentration
Substrate concentration
What is the definition of “enzyme”?
Biological catalyst that speeds up a reaction
Biological catalyst that slows down a reaction
A substance that reduces sugar
Substance that heats a reaction
The optimum temperature is the….that works in a reaction activity
Least temperature
Highest temperature
Perfect best temperature
Worst temperature
What happens to the enzyme if the temperature of the activity is so high?
Dies
Work faster
Work slower
Denatured
Lactase breaks down lactose in milk into:
Carbon dioxide and water
Hydrogen and water
Glucose and galactose
Oxygen and glucose
What is used to test starch?
Benedict
Biuret
Iodine
DCPIP
What is the result of a positive test of starch?
Green
Yellow
Orange
Red
None of them Is the result
All of the above can be the result
What is the safety precaution to do when doing ALL food tests?
Wear eye goggles and gloves
Heating in water bath
Stay away
What’s the test for vitamin C and it’s positive result?
Biuret-purple
Benedict-blue black
DCPIP-colorless
DCPIP-milky
Fats are tested by..
Biuret
Ethanol emulsion test
Iodine
DCPIP
The only food group that needs to be heated in a water bath of 80 C is…
Starch
Vitamin C
Protein
Reducing sugar
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