8.1a IB Bio Enzymes

The sum total of all chemical reactions that occur within an organism is it's

• metabolism.

• enzyme-driven reaction.

• glycolysis.

• activation energy.

Activation energy is the ________ input of energy required to trigger a chemical reaction.

• initial

• final

After the substrate binds to the enzyme's active site, the active site is altered to reach the

• transition state.

• allosteric site.

• reaction path.

• net amount of energy.

Enzymes lower the activation energy of a reaction by

• stressing the bonds in the substrate molecule.

• increasing the net energy output of the reaction.

• reacting with the allosteric site of the substrate.

The diagram illustrates

• competitive inhibition.

• non-competitive inhibition.

The red circle could represent

• the enzyme.

• the substrate.

In non-competitive inhibition, the inhibitor fits into the enzyme's

• allosteric site.

• active site.

This graph illustrates

• competitive inhibition.

• non-competitive inhibition.

In competitive inhibition, the rate of reaction _____ eventually reach the same maximum rate as with no inhibitor present.

• can

• can not

The image illustrates

• competitive inhibition.

• non-competitive inhibition.