Which Of The Following Can Affect The Rate Of An Enzyme Catalyzed Reaction?

How does an enzyme affect the rate of a reaction?

Enzymes are biological catalysts.

Catalysts lower the activation energy for reactions.

The lower the activation energy for a reaction, the faster the rate.

Thus enzymes speed up reactions by lowering activation energy..

What could be used to calculate the rate of an enzyme catalysed reaction?

The rate of an enzyme-catalysed reaction is calculated by measuring the rate at which a substrate is used up or by the rate at which a product is formed.

How does pH affect rate of enzyme action?

The closer the pH is to 7, the higher the reaction rate. As the pH distances from the optimum, however, the reaction rate decreases because the shape of the enzyme’s active site begins to deform, until it becomes denatured and the substrate can no longer fit the active site.

Which is the slowest enzyme?

LysozymeThe slowest known enzyme is Lysozyme.

What is enzyme and its function?

An enzyme is a type of protein found within a cell. Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. … An enzyme’s shape is tied to its function. Heat, disease, or harsh chemical conditions can damage enzymes and change their shape.

Can an enzyme slow down a reaction?

Enzymes by their very nature do not slow down chemical reaction rates.

What are two effects that an enzyme has on a reaction?

Enzymes lower the activation energy of a reaction – that is the required amount of energy needed for a reaction to occur. They do this by binding to a substrate and holding it in a way that allows the reaction to happen more efficiently.

What is the difference between the reaction with an enzyme and the reaction without an enzyme?

Enzymes lower the activation energy of the reaction but do not change the free energy of the reaction. A substance that helps a chemical reaction to occur is called a catalyst, and the molecules that catalyze biochemical reactions are called enzymes. … Without enzymes to speed up these reactions, life could not persist.

What are 2 examples of things that can inhibit the way that an enzyme works?

Because enzymes have a very specific three-dimensional structure, changes in conditions such as temperature and pH can impact their effectiveness.Denaturation. … Amino Acid Side Chains. … Effect of pH. … Effect of Temperature.

Are enzymes affected by the reactions they catalyze?

The answer depends on the enzyme. Some enzymes speed up chemical reactions by bringing two substrates together in the right orientation. … In fact, a hallmark property of enzymes is that they aren’t altered by the reactions they catalyze.

What happens to enzymes at low temperatures?

Temperature. At low temperatures, the number of successful collisions between the enzyme and substrate is reduced because their molecular movement decreases. The reaction is slow. The human body is maintained at 37°C as this is the temperature at which the enzymes in our body work best.

What three factors affect enzymes?

Several factors affect the rate at which enzymatic reactions proceed – temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.

What kind of enzyme is catalyzing this reaction?

Enzyme catalysisAn enzyme catalyzes a biochemical reaction by binding a substrate at the active site. After the reaction has proceeded, the products are released and the enzyme can catalyze further reactions.

At what pH and temperature the enzymes are highly efficient?

Acids have a pH of less than 7, bases (alkalis) have a pH greater than 7. Enzymes in the stomach, such as pepsin ( which digests protein ), work best in very acid conditions ( pH 1 – 2 ), but most enzymes in the body work best close to pH 7.