Chlamydia are obligate intracellular organiisms which contain

Options

A. RNA
B. DNA
C. both (1) and (2)
D. tRNA

Answer

To answer the question "Chlamydia are obligate intracellular organisms which contain," we will follow these steps:

### Step 1: Understand the nature of Chlamydia
Chlamydia are classified as obligate intracellular organisms, meaning they can only survive and reproduce within the cells of a host. They are known to have a unique life cycle that involves two forms: the elementary body and the reticulate body.

### Step 2: Identify the genetic material present in Chlamydia
Chlamydia contain both DNA and RNA. They have a double-stranded DNA genome, which is typical for many bacteria, and they also have RNA, which is essential for protein synthesis and other cellular functions.

### Step 3: Analyze the options given in the question
The options provided are:
1. RNA
2. DNA
3. Both RNA and DNA
4. tRNA

From our understanding, Chlamydia must contain both DNA and RNA.

### Step 4: Select the correct answer
Based on the analysis, the correct answer is option 3: both RNA and DNA.

### Final Answer:
Chlamydia are obligate intracellular organisms which contain both RNA and DNA.

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