Proteins and Enzymes

Front

What is a substrate?

Back

A substrate is a molecule upon which an enzyme acts. It binds to the enzyme's active site to undergo a chemical reaction.

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms by lowering the activation energy required.

Front

What is the active site of an enzyme?

Back

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

Front

What happens to enzymes at high temperatures?

Back

Enzymes can denature at high temperatures, meaning their shape is altered, which can affect their function.

Front

What is denaturation in enzymes?

Back

Denaturation is the process where an enzyme loses its functional shape due to external factors like heat or pH changes.

Front

Which of the following is an enzyme: Sucrose, Galactose, Fructose, Amylase?

Back

Amylase is an enzyme that helps break down starches into sugars.

Front

What do substrates become after a reaction with an enzyme?

Back

After the reaction, substrates become products.

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes facilitate biochemical reactions by lowering the activation energy and increasing the reaction rate.

Front

What factors can affect enzyme activity?

Back

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

Front

What is an inhibitor in the context of enzymes?

Back

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