Which of the following features distinguishes bacteria and archaea from eukaryotes?

• A. They contain multiple linear chromosomes.
• B. They possess mitochondria for energy production.
• C. They have complex membrane-bound organelles.
• D. They lack a membrane-bound nucleus.

Answer: (D)

Verified step by step guidance

1. Understand the fundamental differences between the three domains of life: Bacteria, Archaea, and Eukaryotes.
2. Recall that eukaryotic cells have a membrane-bound nucleus, which houses their genetic material, while bacteria and archaea do not.
3. Recognize that bacteria and archaea typically have a single circular chromosome, unlike eukaryotes which have multiple linear chromosomes.
4. Note that mitochondria and other complex membrane-bound organelles are characteristic of eukaryotic cells, not bacteria or archaea.
5. Conclude that the key distinguishing feature of bacteria and archaea compared to eukaryotes is the absence of a membrane-bound nucleus.