Microbiology lab enzyme function

In an enzyme controlled reaction, a substrate is the same as

reactant

As the concehtration of an enzyme increases for a given substrate,

reaction rate increases similarly.

The primary function of an enzyme or any biological catalyst

reduced the energy of activation and increase the rate of a reaction.

The optimum condition of an enzyme

Is where it works the best

The shape of an enzyme determines its function

It is true they do

How does an enzyme work to catalyze a reaction?

It supplies the energy to speed up a reaction and lowers the energy barrier needed for reactants to acheive the transition state.

Enzymes are

Proteins

What binds to the active site of an enzyme?

Substrate

What can change the active site of an enzyme and alter its function

Temperature and pH

Everytime you add more enzyme, the reaction rate increases proportionally until the reaction rate suddenly levels off. No other chemicals were added and no modifications were made in the experimental setting. Why did the reaction rate stopped increasing?

The molecules of substrate were all bound to enzyme.

Enzymes have which of the following characteristics?

They are proteins. They can bind with substrate. They act as catalysts.

Enzymes

are specific for their substrates. act as catalysts. have a special shape that controls their function. control the speed of reactions.

Which of the following best describe what enzymes are and how they are used?

catalytic proteins that are efficient in initiating chemical reactions by lowering the activation energy.

Human catalase has an optimum temperature of 37°C. Increasing the temperature by 30 degrees above the optimum range will

denature the enzyme. cause an abrupt decrease in the rate of activity.

When you boil egg white (albumin is protein) you have

denatured the protein

Without undergoing any changes itself, the _____ makes changes to the ______.

enzyme and substrate

When the enzyme is at its most active state, an increase in the concentration of substrate will

not make any difference in the enzyme activity.

Enzymes in human cells tend to perform best

37 degrees Celius

How often can a catalase molecule be used to hydrolyze hydrogen perioxide

Many times

Enzyme activity can be determined by

Measuring how much of the substrate is consumed and measuring how much the product is produce

Is The active site is located on the substrate?

No its is located on the enzyme

Which of the following statements about enzymes is FALSE?

O The substrate binds to the enzyme with low specificity.