Why are non-covalent interaction between substrate and active site important?

The active site and the substrate interaction is transient and non covalent. The distribution of charge of the active site and the substrate must be complementary of one another. The meaning of the complementary is that the postive and negative charge of should be cancelled out by one another or there will be repulsion in active and the substrate. This repulsive force will separate the site and substrate.

The non covalent bond such as vander walls, hydrogen bond and other interaction allow the the active site to get free after the reaction as these bonds are easy to separated after the reaction.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

the answer is a) cell division.

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