LIFE SCIENCE

Detailed explanation-1: -Since the substrate must fit into the active site of the enzyme before catalysis can occur, only properly designed molecules can serve as substrates for a specific enzyme; in many cases, an enzyme will react with only one naturally occurring molecule.

Detailed explanation-2: -An enzyme’s substrate specificity is a property that enables the enzyme to bind only to the specific substrate. Both enzymes and substrates have complementary sites for binding, which is explained through the “lock and key” model of enzyme function.

Detailed explanation-3: -Absolute specificity-the enzyme will catalyze only one reaction.

Detailed explanation-4: -Each different type of enzyme will usually act on only one substrate to catalyse one biological reaction. Enzymes are specific because different enzymes have differently shaped active sites. The shape of the active site of an enzyme is complementary to the shape of its specific substrate .

Detailed explanation-5: -Enzymes bind substrates at key locations in their structure called active sites. They are typically highly specific and only bind certain substrates for certain reactions. Without enzymes, most metabolic reactions would take much longer and would not be fast enough to sustain life.