Question

Which of the following statements are correct regarding Mycoplasma?
A. They are the smallest free-living organisms
B. They lack a cell wall
C. They contain both DNA and RNA
D. They contain cellulose
Choose the correct answer from the options given below:

• A. A only
• B. B only
• C. C only
• D. A, B and C

Hint:

Mycoplasma:
- Smallest free-living organisms.
- Lack cell wall (pleomorphic).
- Resistant to antibiotics that target cell wall (e.g., penicillin).
- Contain both DNA and RNA.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
Mycoplasma are a unique group of bacteria with distinct characteristics.

Step 2: Detailed Explanation:
Characteristics of Mycoplasma:
- A. They are the smallest free-living organisms: Correct, they are about 0.2-0.3 µm in size.
- B. They lack a cell wall: Correct, they have a flexible cell membrane.
- C. They contain both DNA and RNA: Correct, they have both genetic materials.
- D. They contain cellulose: Incorrect, cellulose is found in plant cell walls, not in Mycoplasma.
Thus, statements A, B, and C are correct.

Step 3: Final Answer:
Thus, the correct answer is A, B and C, which corresponds to option (D).
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