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Incorrect statement regarding non membra...

Incorrect statement regarding non membranous cell organelle

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

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The correct Answer is:
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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