Some drugs interact with enzymes and make the biologically inactive. Such drugs are called

Options

A. enzyme promoters
B. enzyme inhibitors
C. allogens
D. all of these

Answer

To solve the question, "Some drugs interact with enzymes and make them biologically inactive. Such drugs are called," we can follow these steps:

### Step 1: Understand the Role of Enzymes
Enzymes are biological catalysts that speed up chemical reactions in the body. They work by binding to specific substrates at their active sites.

**Hint:** Enzymes are crucial for various biochemical processes and their activity can be affected by different substances.

### Step 2: Identify the Interaction of Drugs with Enzymes
Some drugs can interact with enzymes in a way that prevents them from functioning properly. This can occur through different mechanisms, such as competing with substrates for the active site or binding to other sites on the enzyme.

**Hint:** Consider how drugs can influence the binding of substrates to enzymes.

### Step 3: Define the Types of Drug Interactions
There are two main types of interactions:
1. **Competitive Inhibition:** The drug competes with the substrate for the active site of the enzyme.
2. **Non-competitive Inhibition:** The drug binds to an allosteric site (a different site on the enzyme), changing the shape of the active site and preventing substrate binding.

**Hint:** Think about how the binding of a drug can alter the enzyme's ability to interact with its substrate.

### Step 4: Conclude the Type of Drug
Drugs that inhibit enzyme activity, either by competing for the active site or by altering the enzyme's shape through allosteric binding, are collectively referred to as **enzyme inhibitors**.

**Hint:** The term you are looking for encompasses both competitive and non-competitive inhibitors.

### Final Answer
Such drugs are called **enzyme inhibitors**.