Cytochrome is a component of ETC in mitochendria/chloroplast, acting as electron acceptor. It is a

Options

A. glycoprotein
B. lipid
C. `Ca2^+` containing metallo flavoprotein
D. `Fe^(+++)` containing prophyrin pigment protein

Answer

To answer the question about cytochrome, we will follow these steps:

### Step 1: Understand what cytochrome is
Cytochrome is a type of protein that plays a crucial role in the electron transport chain (ETC) within mitochondria and chloroplasts. It is involved in the process of cellular respiration and photosynthesis, respectively.

**Hint:** Cytochromes are proteins that contain a specific group known as heme.

### Step 2: Identify the components of cytochrome
Cytochromes contain a heme group, which is a complex of iron and porphyrin. The iron atom at the center of the heme group is essential for its function as an electron carrier.

**Hint:** Look for the key component that allows cytochromes to accept and transfer electrons.

### Step 3: Analyze the options given in the question
The options provided are:
1. Glycoprotein
2. Lipid
3. Calcium containing metalloflavoprotein
4. Iron containing porphyrin pigment protein

We need to determine which of these accurately describes cytochrome.

**Hint:** Focus on the presence of iron in the structure of cytochrome.

### Step 4: Determine the correct answer
Since cytochrome contains a heme group with an iron atom, the correct answer is:
**Iron containing porphyrin pigment protein.**

**Hint:** Remember that the heme group is what gives cytochrome its electron-accepting properties.

### Final Answer
Cytochrome is an iron-containing porphyrin pigment protein.