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 catalysts in biochemical reactions. They have a specific shape that determines their function. The active site of an enzyme is the region where the substrate binds and the reaction takes place. The shape of the active site is complementary to the shape of its specific substrate, which ensures that the enzyme can only catalyze specific reactions with specific substrates. This is often referred to as the "lock and key" model.

The amino acids that make up the enzyme contribute to the unique chemical environment within the active site. This environment facilitates the conversion of substrate to product.

The unique shape of the active site means that an enzyme will typically only work on one or a small number of similar substrate molecules. This specificity is crucial for the regulation of biochemical pathways in the cell.

The statement "The shape of an enzyme is easily changed meaning an enzyme can work on many substrate molecules" is incorrect. While it's true that enzymes can undergo conformational changes to bind to their substrates, they cannot change their shape to work on many different substrates. Each enzyme is specific to its substrate due to the unique shape and chemical environment of its active site.