Enzymes

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that accelerates chemical reactions in living organisms by lowering the activation energy required for the reaction.

Front

How do enzymes increase the rate of a chemical reaction?

Back

Enzymes increase the rate of a chemical reaction by reducing the activation energy needed for the reaction to occur.

Front

What is a substrate in the context of enzymes?

Back

A substrate is any substance that is acted upon by an enzyme during a chemical reaction.

Front

What is the active site of an enzyme?

Back

The active site is the specific region on an enzyme where the substrate binds and the reaction occurs.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

What role do coenzymes play in enzymatic reactions?

Back

Coenzymes are non-protein molecules that assist enzymes in catalyzing reactions, often by acting as carriers for chemical groups.

Front

What factors can affect enzyme activity?

Back

Factors that can affect enzyme activity include temperature, pH, substrate concentration, and the presence of inhibitors or activators.

Front

What is enzyme specificity?

Back

Enzyme specificity refers to the ability of an enzyme to select and catalyze a specific substrate among many possible candidates.

Front

What is an inhibitor in enzymatic reactions?

Back

An inhibitor is a substance that decreases the activity of an enzyme by binding to it and preventing the substrate from binding.

Front

What is the difference between competitive and non-competitive inhibition?

Back

Competitive inhibition occurs when an inhibitor competes with the substrate for the active site, while non-competitive inhibition occurs when an inhibitor binds to a different site on the enzyme, altering its function.