Bio Unit 3 - Concept 1 - Reactions and Enzymes

Front

What is an exothermic reaction?

Back

A reaction that releases energy in the form of heat or light.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What does an enzyme do to the activation energy of a reaction?

Back

An enzyme decreases the activation energy, increasing the rate of the reaction.

Front

What is the active site of an enzyme?

Back

The location on the enzyme where the substrate binds.

Front

What is cellular respiration?

Back

A biochemical reaction in which the energy stored in sugar is released and stored in ATP.

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts to speed up reactions without being consumed.

Front

What is a substrate in the context of enzyme activity?

Back

The substance on which an enzyme acts.

Front

What is the difference between a catalyst and an enzyme?

Back

A catalyst is a substance that speeds up a reaction, while an enzyme is a specific type of catalyst that is biological in nature.

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

How do temperature and pH affect enzyme activity?

Back

Enzymes have optimal temperature and pH ranges; deviations can reduce their activity.