Question

The organelle without ac membrane is-
A) Ribosome
B) Golgi apparatus
C) Chloroplast
D) Nucleus

Answer 1

Hint:The organelle without the membrane is present in both prokaryotic and eukaryotic cells. This cell organelle plays an important role in protein synthesis.

Complete answer:
Some cell organelle in the cell are membrane bound like Golgi body, endoplasmic reticulum, mitochondria etc., While some cell organelles like ribosomes and cytoskeleton are non membranous.
Ribosomes are small, round, spherical bodies which are either bound to endoplasmic reticulum in rough endoplasmic reticulum or are free floating in the cytoplasm. Ribosomes are composed of protein and ribonucleic acids. Eukaryotic ribosome has 2 subunits larger and smaller subunits which are 60s and 40 s respectively, while prokaryotic ribosomes has larger 50s and smaller 30s subunits. Ribosome plays a major role in translation (protein synthesis). Ribosome reads the information in the form of codon which are present on mRNA and decodes it by adding amino acids to the polypeptide chain. The Ribosomes do not produce any kind of secretions so as cytoskeletons. Other cell organelles like Golgi body, endoplasmic reticulum and other membrane bound organelles are involved in secretions.

Additional information:cell organelle are different subunits present within the cell which performs different types of functions like protein and lipid synthesis, energy production, detoxification, storage of genetic materials and many more.

Hence the correct answer is option ‘A’.

Note:As membrane bound organelles are fluid filled and non membranous cell organelles are comparatively more solid than membrane bound and are not filled with any kind of fluid so there is no chance of leakage in non membrane bound organelles.