Question

Your seven-year-old brother has bet you that the water in the pond behind your house does not have anything living in it. You disagree with him and pull out your microscope to show him the types of eukaryotic cells in the pond water. Which of the following items would be present in eukaryotic cells and NOT in prokaryotic cells?

A. Nucleus
B. Cell membrane
C. Ribosomes
D. Cell wall

Answer 1

The main difference between eukaryotic cells and prokaryotic cells is the presence of a nucleus, which is surrounded by a membrane. Other membrane-bound organelles, such as mitochondria, chloroplasts, and vesicles, are also present in eukaryotic cells. Prokaryotic cells lack these structures.

Step-by-step explanation:

Eukaryotic cells have several characteristics that differentiate them from prokaryotic cells. One of the main differences is the presence of a nucleus, which is surrounded by a membrane and contains the cell's DNA. This membrane-bound nucleus is not found in prokaryotic cells. Other membrane-bound organelles, such as mitochondria, chloroplasts, and vesicles, are also present in eukaryotic cells but absent in prokaryotic cells.

So, the correct answer is A. Nucleus. Cell membrane and ribosomes are present in both eukaryotic and prokaryotic cells, while cell walls are found in prokaryotes but not in eukaryotes.