Some fundtion of a nutrients element are given below
(i). Important constituents of proteins involved in ETS
(ii). Activator of catalase
(iii). Important constituent of cytoshrome
(iv). Essential for chlorophyll systhesis
the concerned nutrient is_______

Options

A. Cu
B. Fe
C. Ca
D. Mo

Answer

To solve the question regarding the nutrient element based on the given functions, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Functions of Nutrient Elements**:
- The question lists four functions:
- (i) Important constituents of proteins involved in the electron transport system (ETS).
- (ii) Activator of catalase.
- (iii) Important constituent of cytochrome.
- (iv) Essential for chlorophyll synthesis.

2. **Analyze Each Function**:
- **Function (i)**: The electron transport system involves proteins that often contain metal ions. One of the key elements involved in this process is iron, which is a constituent of proteins like ferredoxin.
- **Function (ii)**: Catalase is an enzyme that breaks down hydrogen peroxide, and iron is known to activate this enzyme.
- **Function (iii)**: Cytochromes are proteins that contain heme groups, which include iron as a central atom, making it essential for their function.
- **Function (iv)**: Iron is also essential for the synthesis of chlorophyll, along with magnesium.

3. **Conclude the Nutrient Element**:
- Based on the analysis, the nutrient that fits all these functions is **iron**. It plays a crucial role in the electron transport system, activates catalase, is a constituent of cytochromes, and is essential for chlorophyll synthesis.

### Final Answer:
The concerned nutrient is **iron**.

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