Incorrect statement regarding non membranous cell organelle

Options

A. Microtubles are made up of lipoproteins
B. Ribosomes are ribonucleoprotein particles
C. Nucleolus synthesis ribosomal RNA only but not ribosomal proteins
D. The arrangement of axonemal microtubules in centriole is referred as 9+10 array

Answer

To solve the question regarding the incorrect statement about non-membranous cell organelles, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand Non-Membranous Organelles**: Non-membranous organelles are structures within a cell that do not have a membrane surrounding them. Examples include ribosomes, microtubules, and the cytoskeleton.

2. **Evaluate Each Option**:
- **Option 1**: "Microtubules are made up of lipoprotein."
- **Analysis**: This statement is incorrect. Microtubules are composed of tubulin, a type of protein, not lipoprotein.

- **Option 2**: "Ribosomes are ribonucleoprotein particles."
- **Analysis**: This statement is correct. Ribosomes are indeed made up of ribonucleic acid (RNA) and proteins, hence they are classified as ribonucleoprotein particles.

- **Option 3**: "Nucleolus synthesizes ribosomal RNA only but not ribosomal proteins."
- **Analysis**: This statement is also correct. The nucleolus is responsible for synthesizing ribosomal RNA (rRNA), while ribosomal proteins are synthesized in the cytoplasm and then imported into the nucleolus.

- **Option 4**: "The arrangement of the axonemal microtubule in the centriole is referred to as 9 plus 10 array."
- **Analysis**: This statement is incorrect. The correct arrangement of microtubules in centrioles is a "9 plus 0" arrangement, where there are 9 triplet microtubules and no central pair.

3. **Conclusion**: The incorrect statement regarding non-membranous cell organelles is **Option 1**: "Microtubules are made up of lipoprotein."

### Final Answer:
The incorrect statement regarding non-membranous cell organelles is **Option 1**.

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