Which Cell Structure Serves The Stated Function In Both Eukaryotic And Prokaryotic Cells?

Which Cell Structure Serves The Stated Function In Both Eukaryotic And Prokaryotic Cells?

A) Nucleus: stores genetic material

B) Cytoplasm: protects cell structures

C) Ribosomes: regulate cell processes

D) DNA: surrounds cell contents

Correct Answer: B)

Cytoplasm: protects cell structures

Explanation

Among all the given options, only Option B is correct for both Eukaryotic and Prokaryotic cells. Cytoplasm is a jelly-like structure that protects the various cell structures. It is present in both cell types.

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Why the Other Options Are Incorrect

• A) Nucleus: stores genetic material While this is true for eukaryotic cells, prokaryotic cells don’t have a nucleus. Their DNA floats freely in the cytoplasm and hence the option is incorrect.
• C) Ribosomes: regulate cell processes Ribosomes are responsible for protein synthesis, not regulation. Cell processes are regulated by enzymes, signaling molecules, and DNA instructions.
• D) DNA: surrounds cell contents DNA does not surround the cell contents—it resides inside the cell and holds genetic instructions. The cell membrane surrounds the cell.

Faqs

Q1: If prokaryotes don’t have organelles, how do they survive?

A: Prokaryotes don’t have organelles, so they use efficient methods to survive. They have organelles to perform necessary processes in the cytoplasm for their survival and growth.

Q2: Do both cell types carry out protein synthesis in the same way?

A: Yes, both use ribosomes, but eukaryotes have larger (80S) ribosomes compared to prokaryotes (70S). So, although the process is similar, the location and complexity differ.

Q3: Why is the cytoplasm important in all cells?

A: Cytoplasm is responsible for maintaining the cell's structure and facilitating the cell's varied activities. It provides the space for the organelles to transport essential materials inside the cell. Hence, it's important in all cells regardless of their type.

Q4: How is DNA stored differently in prokaryotic and eukaryotic cells?

A:

• In eukaryotes, DNA is enclosed in a nucleus.
• In prokaryotes, DNA is in the cytoplasm since there is no nucleus. It is usually in a single circular chromosome.

Q5: What does “membrane-bound organelle” mean?

A: Membrane-bound organelle refers to the cell structures surrounded by a membrane that separates them from the cytoplasm and other cell structures. It gives an isolated space for their individual functions, and this membrane is absent in prokaryotic cells.