An element involved in metabolism of urea is

Options

A. Na
B. Si
C. Ni
D. Zn

Answer

To determine the element involved in the metabolism of urea, we can follow these steps:

### Step 1: Understand Urea Metabolism
Urea is a toxic nitrogenous waste product formed in the body, primarily through the breakdown of proteins. It is crucial to understand how urea is formed and metabolized in the body.

**Hint:** Urea is produced as a result of protein metabolism and needs to be broken down for excretion.

### Step 2: Identify the Enzyme Involved
The enzyme responsible for breaking down urea is called urease. This enzyme catalyzes the hydrolysis of urea into ammonia and carbon dioxide.

**Hint:** Look for enzymes that specifically act on urea in the metabolic pathway.

### Step 3: Determine the Role of Elements
Certain elements are required for the proper functioning of enzymes. In the case of urease, it is important to identify which element is a component of this enzyme.

**Hint:** Consider which elements are known to be essential for enzyme activity.

### Step 4: Analyze the Given Options
The options provided are sodium, silicon, nickel, and zinc. Among these, we need to find out which one is associated with urease.

**Hint:** Recall the specific role of nickel in biological systems, especially in relation to urease.

### Step 5: Conclusion
Nickel is a divalent cation that is an essential component of the enzyme urease. It plays a critical role in the metabolism of urea by facilitating the breakdown of this toxic waste product.

**Final Answer:** The element involved in the metabolism of urea is **Nickel**.

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