Each cell in the human body contains thousands of different enzymes responsible for regulating reactions within the cell. Which statement explains why a single enzyme is unable to regulate a variety of reactions? The binding of a product and an enzyme is specific. The binding of a substrate and an enzyme is specific. The enzyme is consumed by the products of the reactions The enzyme is consumed by the substrates of the reactions.

Question

Each cell in the human body contains thousands of different enzymes responsible for regulating reactions within the cell. Which statement explains why a single enzyme is unable to regulate a variety of reactions? The binding of a product and an enzyme is specific. The binding of a substrate and an enzyme is specific. The enzyme is consumed by the products of the reactions The enzyme is consumed by the substrates of the reactions.

Answer 1

The binding of a substrate and an enzyme is specific.

Answer 2

In biological systems, enzymes are highly specific to their substrates due to the unique structure of their active sites. This specificity arises because the active site of an enzyme is shaped to only fit a particular substrate, making it capable of catalyzing only one type of reaction or a very limited range of reactions. This specificity is a critical aspect of enzyme function, ensuring that metabolic processes are tightly regulated and efficient. Therefore, the statement that explains why a single enzyme cannot regulate a variety of reactions is about the specificity of enzyme-substrate binding.

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