Prion consists of
(a) DNA
(b) RNA
(c) Both DNA and RNA
(d) Protein

Options

A. DNA
B. RNA
C. Both DNA and RNA
D. Protiein

Answer

To solve the question "Prion consists of", we need to analyze the options provided and understand what a prion is.

### Step-by-Step Solution:

1. **Understanding Prions**:
- A prion is a type of infectious agent that is composed solely of protein. Unlike viruses, which contain nucleic acids (DNA or RNA), prions do not have any genetic material.

2. **Evaluating the Options**:
- **Option (a) DNA**: Prions do not contain DNA. This option is incorrect.
- **Option (b) RNA**: Prions do not contain RNA either. This option is also incorrect.
- **Option (c) Both DNA and RNA**: Since prions lack both DNA and RNA, this option is incorrect as well.
- **Option (d) Protein**: This is correct because prions are misfolded proteins.

3. **Conclusion**:
- Based on the understanding that prions are solely composed of protein and do not contain any nucleic acids, the correct answer is (d) Protein.

### Final Answer:
(d) Protein