4 - Enzyme

Front

What is the lock and key hypothesis?

Back

The lock and key hypothesis explains that enzymes are specific to a substrate, meaning each enzyme fits only one type of substrate like a key fits into a lock.

Front

True or False: Every enzyme has an optimal temperature and pH.

Back

True

Front

What happens to an enzyme when the pH is significantly changed?

Back

The enzyme will denature, meaning it loses its shape and function.

Front

How do enzymes influence chemical reactions in living systems?

Back

Enzymes affect the rate at which reactions occur, speeding them up without being consumed in the process.

Front

What do enzymes do to the energy required for a reaction?

Back

Enzymes make a reaction go faster and use less energy.

Front

Define enzyme.

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms.

Front

What is denaturation in the context of enzymes?

Back

Denaturation is the process where an enzyme loses its functional shape due to extreme changes in temperature or pH.

Front

What is the role of substrates in enzyme activity?

Back

Substrates are the reactants that enzymes act upon to facilitate a chemical reaction.

Front

What is an active site?

Back

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

Front

What factors can affect enzyme activity?

Back

Factors include temperature, pH, substrate concentration, and the presence of inhibitors or activators.