A key idea in biology is that structure determines function.  How does the shape of an enzyme determine its function?  Select all correct answers.Group of answer choicesThe shape of the active site matches and is specific to its substrate.The shape of an enzyme is easily changed meaning an enzyme can work on many substrate molecules.The amino acids that build an enzyme create a unique chemical environment within the enzymes active site.The unique shape of the active site means an enzyme will work on one or a small number of similar substrate molecules.

The correct answers are:

1. The shape of the active site matches and is specific to its substrate.
2. The amino acids that build an enzyme create a unique chemical environment within the enzymes active site.
3. The unique shape of the active site means an enzyme will work on one or a small number of similar substrate molecules.

Explanation:

Enzymes are proteins that act as biological catalysts, speeding up reactions that would otherwise happen too slowly to support life. The shape of an enzyme is crucial to its function because it determines the enzyme's active site. This is the area where the substrate (the molecule the enzyme acts on) binds.

The shape of the active site is specific to its substrate, meaning it matches the shape of the substrate like a lock and key. This specificity allows the enzyme to bind to the substrate and catalyze the reaction.

The amino acids that build an enzyme create a unique chemical environment within the enzyme's active site. This environment facilitates the reaction that the enzyme catalyzes.

The unique shape of the active site means an enzyme will work on one or a small number of similar substrate molecules. This specificity is crucial for the enzyme's function, as it ensures that the enzyme catalyzes the correct reaction.

The statement "The shape of an enzyme is easily changed meaning an enzyme can work on many substrate molecules" is incorrect. While enzymes can undergo slight changes in shape to bind to their substrate (a process known as induced fit), they cannot drastically change their shape to work on many different substrates. Their shape, and particularly the shape of their active site, is specific to their substrate.