Q. Which of the following statements are correct? I. Mycoplasmas are the smallest cells II. Nerve cells are some of the longest cells III. Ribosomes are non-membrane bound organelles found only in eukaryotic cells IV. The cytoplasm is the main arena of cellular activities only in plant cells
A) I, II and III
B) I and II
C) II and III
D) I, II, III and IV
Explanation
Cytoplasm is the crystallo-colloidal complex that forms the protoplasm excluding its nucleoid. Cytoplasm is granular due to presence of large number of ribosomes. Membrane bound cell organelles as found in eukaryotes are absent in prokaryotes Cytoplasm is present in prokaryotic as well as in eukaryotic cells. Ribosomes are also present in both, prokaryotic as well as eukaryotic cells In prokaryotes, it is of 70S in nature, while in eukaryotes it is of 80S
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.