Which of the following is not a feature of prokaryotic cells?

Options

A. Chlorophyll not located in chloroplasts
B. Absence of organelles bounded membranes
C. Only one chromosome located in the nucleus
D. Flagella that lack the '9 + 2' pattern of fibrils

Explanation

To determine which of the following is not a feature of prokaryotic cells, we will analyze each option provided:

1. **Chlorophyll not located in chloroplast**:
- Prokaryotic cells do not have membrane-bound organelles, including chloroplasts. Instead, chlorophyll is found in the thylakoid membranes or the cytoplasm. Therefore, this statement is true for prokaryotic cells.

2. **Absence of organelles bound by membranes**:
- Prokaryotic cells lack membrane-bound organelles. This is a defining feature of prokaryotes. Thus, this statement is also true for prokaryotic cells.

3. **Only one chromosome located in the nucleus**:
- Prokaryotic cells do not have a true nucleus. Instead, their genetic material is located in a region called the nucleoid, and they typically have a single circular chromosome. Therefore, this statement is incorrect because it inaccurately describes the location of the chromosome in prokaryotes.

4. **Flagella that lack the 9 plus 2 pattern of fibrils**:
- Prokaryotic flagella are structurally different from eukaryotic flagella, which have a 9 plus 2 arrangement of microtubules. Prokaryotic flagella are made of a protein called flagellin and do not have this arrangement. Thus, this statement is true for prokaryotic cells.

After analyzing all the options, the statement that is not a feature of prokaryotic cells is:

**Final Answer**: Only one chromosome located in the nucleus.