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Enzymes and Their Functions

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Questions and Answers

All enzymes are proteins. Proteins are made of ______.

amino acid

An enzyme acts as a ______ catalyst.

biological

In order to work rapidly, enzymes need the correct ______ and pH.

temperature

An example of an enzyme that works in the acidic conditions in the stomach is ______.

pepsin Signup and view all the answers

Acidic conditions will kill many of the ______ present in food.

bacteria Signup and view all the answers

Salivary ______ stops working in acidic conditions.

amylase Signup and view all the answers

Fats are broken down by ______.

lipase Signup and view all the answers

Match the key terms to their definition:

Enzyme = A protein that speeds up reactions Substrate = Molecules that bind to an enzyme Catalyst = Any molecule that speeds up reactions Specificity = One enzyme for one substrate Active site = Groove in enzyme where the reaction takes place Signup and view all the answers

Define what is meant by the term enzyme-substrate complex.

The enzyme-substrate complex is a transient molecular structure formed when an enzyme binds to its substrate. Signup and view all the answers

Explain what is meant by the term catalyst.

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. Signup and view all the answers

State why enzymes are important in organisms.

Enzymes are important because they speed up biochemical reactions, making it possible for life processes to occur at a suitable rate. Signup and view all the answers

Study Notes

Enzymes

Enzymes are proteins.
Enzymes act as biological catalysts.
Enzymes need the correct temperature and pH to work quickly.
An example of an enzyme working in acidic conditions is protease.
Acidic conditions will kill many bacteria in food.
Salivary amylase stops working in acidic conditions.
Fats are broken down by lipase.

Enzyme Terminology

An enzyme is a protein that speeds up reactions.
A substrate is a molecule that binds to an enzyme.
An active site is a groove in an enzyme where the reaction takes place.
Specificity means one enzyme has one specific substrate
A catalyst is a molecule that speeds up reactions.

Enzyme-Substrate Complex

An enzyme-substrate complex is when the enzyme and substrate have bound together.

Enzyme Action

Enzymes and substrates collide randomly.
Active sites are complementary to their substrate molecules.
Enzymes are recycled after a reaction.

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Description

Explore the fascinating world of enzymes and their critical roles as biological catalysts in this quiz. Learn about enzyme structures, specificity, and the enzyme-substrate complex. Test your knowledge on how enzymes operate under different conditions and their importance in biological processes.