Prokaryotes differ from eukaryotes in absence of

Options

A. DNA
B. Basic proteins
C. Histones
D. Both B and C.

Answer

To answer the question "Prokaryotes differ from eukaryotes in absence of," we will analyze the options provided step by step.

### Step-by-Step Solution:

1. **Understanding Prokaryotes and Eukaryotes**:
- Prokaryotes are unicellular organisms that lack a nucleus and other membrane-bound organelles. They include bacteria and archaea.
- Eukaryotes are organisms whose cells contain a nucleus and other organelles, such as fungi, plants, and animals.

2. **Analyzing the First Option: DNA**:
- DNA is the genetic material found in both prokaryotes and eukaryotes. Therefore, this option is incorrect.

3. **Analyzing the Second Option: Basic Proteins**:
- Prokaryotes contain basic proteins, such as HU proteins, which are involved in DNA packaging. Eukaryotes have histone proteins that are also basic. Since both types of cells have basic proteins, this option is also incorrect.

4. **Analyzing the Third Option: Histones**:
- Prokaryotes do not have histones, which are proteins that help in the packaging of DNA in eukaryotic cells. This option is correct because histones are absent in prokaryotes.

5. **Analyzing the Fourth Option: Both B and C**:
- Since option B (basic proteins) is incorrect and option C (histones) is correct, this option is also incorrect.

6. **Conclusion**:
- The correct answer is that prokaryotes differ from eukaryotes in the absence of histones.

### Final Answer:
Prokaryotes differ from eukaryotes in the absence of histones.

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