LIFE SCIENCE

Detailed explanation-1: -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.

Detailed explanation-2: -The Lock and Key Hypothesis Basically, substrates fit into an enzyme the way a key fits into a lock. If the substrate is not the correct shape, it won’t fit into the enzyme, and no chemical reaction can occur. Only those substrates that exactly fit into the enzyme can be catalyzed.

Detailed explanation-3: -The active site of an enzyme possesses a unique conformation (including correctly positioned bonding groups) that is complementary to the structure of the substrate, so that the enzyme and substrate molecules fit together in much the same manner as a key fits into a tumbler lock.

Detailed explanation-4: -To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. These molecules are the enzyme’s substrates. In some reactions, one substrate is broken down into multiple products. In others, two substrates come together to create one larger molecule or to swap pieces.