I. All cells possess cell wall.
II. All cells have ribosomes present inside.
III. All cells have well-organized nucleus.
IV. All cells have linear DNA molecules present in them.
Which of the statements given above is/are correct?
The question asks to identify the correct statements regarding cell structures applicable to all cells.
Cell Structure Statements Analysis
Let's analyze each statement:
- Statement I: All cells possess cell wall. This statement is incorrect. While plant cells, fungal cells, and bacterial cells have cell walls, animal cells do not.
- Statement II: All cells have ribosomes present inside. This statement is correct. Ribosomes are essential organelles responsible for protein synthesis and are found in virtually all living cells, both prokaryotic and eukaryotic.
- Statement III: All cells have well-organized nucleus. This statement is incorrect. Only eukaryotic cells possess a well-organized, membrane-bound nucleus. Prokaryotic cells, like bacteria, have their genetic material in a region called the nucleoid, which is not enclosed by a membrane.
- Statement IV: All cells have linear DNA molecules present in them. This statement is incorrect. Prokaryotic cells typically contain a single, circular DNA molecule. Eukaryotic cells contain multiple, linear DNA molecules organized into chromosomes within the nucleus.
Conclusion on Cell Statements
Based on the analysis, only Statement II is true for all cells.
Therefore, the correct option identifies Statement II as the only correct statement.
Important Questions from Cells
Select the most appropriate synonym of the underlined word.
The removal of ‘petty’ restrictions has made life easier.
Select the most appropriate option that can substitute the underlined word in the given sentence.
The experienced surgeon handled the delicate procedure with care and precision.Select the most appropriate ANTONYM of the underlined word in the following sentence.
I have left it to his discretion to accept or decline my offer.Why does the Rough Endoplasmic Reticulum look "rough" under a microscope?
- DNA polymerase catalyses the addition of nucleotides during DNA replication. Its main role is to:
