Why does the enzyme act as a catalyst?

Answer 1

That depends on weather it is combining or separating the two substances. If it combining the two, then the 2 substances will both attach to the enzyme's active site (where the combination/separation occurs), where the enzyme will then just squeeze the 2 substances together. If it is separating the two, the the substances will again attach to the active site, but the enzyme will then contort itself so that the items will be separated by simple force. You may also want to note the an enzyme is NEVER used up after reactions. Individual enzymes undergo many reactions.

Answer 2

enzymes have a specific role, and it is to break down molecules.

the definition of a catalyst is 'a chemical that speeds reaction time up, or is needed for a chemical reaction w/o using itself up.

enzymes fit the definition of a catalyst. enzymes break down molecules (with a reaction) and can be used again to break down more molecules.

Answer 3

A)

The enzyme does not actively take part in the reaction. It just indicates that the reaction is complete.

B)

Enzymes react with the substrate molecules to form products and become denatured in the process.

C)

Enzymes ensure that the reaction continues without inhibition even if conditions such as temperature and pH are changed.

D)

The products of the reaction are released from the active sites of the enzyme, allowing other substrate molecules to bind with the sites.

Answer 4

Enzymes act as catalysts because they can speed up chemical reactions by lowering the activation energy required for the reaction to occur. They do this by providing an alternative pathway for the reaction to take place, allowing it to happen more efficiently and quickly. Enzymes themselves remain unchanged after the reaction is complete and can be used over and over again.