Which of the following is NOT a true oganalle

Options

A. Lysosome
B. Ribosome
C. Chloroplast
D. Mitochondrion

Answer

To determine which of the following is NOT a true organelle, we need to understand what a true organelle is. Here’s a step-by-step solution:

### Step 1: Define Cell Organelles
Cell organelles are specialized structures within a cell that perform distinct functions necessary for the cell's survival and operation. They can be membrane-bound or non-membrane-bound.

### Step 2: Identify True Organelles
True organelles are typically membrane-bound structures that have specific functions. Examples include:
- **Lysosomes**: Contain digestive enzymes.
- **Chloroplasts**: Involved in photosynthesis.
- **Mitochondria**: Known as the powerhouse of the cell, involved in energy production.

### Step 3: Examine the Ribosome
Ribosomes are not membrane-bound organelles. They are made up of ribonucleic acid (RNA) and proteins and are involved in protein synthesis. Since they lack a surrounding membrane, they are classified as non-membrane-bound organelles.

### Step 4: Conclusion
Based on the definitions and characteristics outlined, ribosomes do not qualify as true organelles because they are not membrane-bound. Therefore, the answer to the question "Which of the following is NOT a true organelle?" is ribosome.

### Final Answer
Ribosome is NOT a true organelle.

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