What is the primary difference between prokaryotic and eukaryotic cells?

What is the primary difference between prokaryotic and eukaryotic cells?

• A. Prokaryotic cells have a nucleus; eukaryotic cells lack a nucleus.
• B. Prokaryotic cells are larger than eukaryotic cells.
• C. Prokaryotic cells lack a nucleus; eukaryotic cells have a nucleus.
• D. Eukaryotic cells reproduce asexually; prokaryotic cells reproduce sexually.

Answer: (C)

The primary difference between prokaryotic and eukaryotic cells is based on the presence or absence of a nucleus. Prokaryotic cells do not have a membrane-bound nucleus; instead, their genetic material is located in a nucleoid region that is not enclosed by a membrane. Conversely, eukaryotic cells have a defined nucleus that houses their DNA, surrounded by a nuclear membrane, which separates the genetic material from the cytoplasm. Understanding this distinction is crucial in cell biology, as it underpins a variety of other differences between the two cell types, including their complexity, size, and method of division. While eukaryotic cells typically contain more organelles and structures such as endoplasmic reticulum and mitochondria, prokaryotic cells are generally simpler and smaller, which influences their metabolic processes and reproduction as well.

The primary difference between prokaryotic and eukaryotic cells is based on the presence or absence of a nucleus. Prokaryotic cells do not have a membrane-bound nucleus; instead, their genetic material is located in a nucleoid region that is not enclosed by a membrane. Conversely, eukaryotic cells have a defined nucleus that houses their DNA, surrounded by a nuclear membrane, which separates the genetic material from the cytoplasm.

Understanding this distinction is crucial in cell biology, as it underpins a variety of other differences between the two cell types, including their complexity, size, and method of division. While eukaryotic cells typically contain more organelles and structures such as endoplasmic reticulum and mitochondria, prokaryotic cells are generally simpler and smaller, which influences their metabolic processes and reproduction as well.