Enzymes

Front

What is a substance called if it speeds up a chemical reaction?

Back

Catalyst

Front

What do enzymes do to the activation energy of a reaction?

Back

Enzymes decrease the activation energy of the reaction.

Front

What happens to the concentrations of lactose and glucose when lactase acts on milk?

Back

The enzyme lactase helps to break down lactose, causing the concentration of lactose to decrease and the concentration of glucose to increase.

Front

Enzymes speed up reaction rates by changing what?

Back

Activation Energy

Front

What is it called when each enzyme only has one substrate that fits its active site?

Back

Specificity

Front

What is the role of enzymes in biological reactions?

Back

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

Front

What is the effect of temperature on enzyme activity?

Back

Increased temperature generally increases enzyme activity up to a certain point, after which the enzyme may denature.

Front

What is denaturation in the context of enzymes?

Back

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

Front

What is the active site of an enzyme?

Back

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

Front

What is a substrate in enzyme reactions?

Back

A substrate is the reactant molecule that an enzyme acts upon.