What is Enzyme? Definition, Meaning & Example
A protein that speeds up a chemical reaction in cells without being consumed.
TL;DR: A protein that speeds up a chemical reaction in cells without being consumed.
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Enzyme: A protein that speeds up a chemical reaction in cells without being consumed.
Explanation
Enzymes are biological catalysts that increase the rate of metabolic reactions essential for life. Each enzyme has an active site where substrate molecules bind. Enzymes are highly specific, with each enzyme typically catalyzing one type of reaction. Enzyme activity depends on temperature, pH, and substrate concentration. Digestive enzymes like amylase, protease, and lipase break down food in the digestive system.
Example
Amylase enzyme in saliva breaks down starch into simpler sugars during chewing, making digestion begin in the mouth.
Frequently Asked Questions
What is an enzyme?
An enzyme is a protein that speeds up chemical reactions in cells and organisms without being destroyed in the process.
Name three digestive enzymes.
Amylase breaks down starch, protease breaks down proteins, and lipase breaks down fats.
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