Question

true or false?

1. all cells have a nucleus.
2. all cells have a cell membrane.
3. eukaryotic cells are the only cells to have a flagellum.
4. the nucleus contains the cells dna.
5. chromatin will become chromosomes.
6. the nucleolus makes the cells dna.

Explanation:

1. Prokaryotic cells (e.g., bacteria) lack a nucleus.
2. The cell membrane is a universal feature of all cells, separating the interior from the exterior.
3. Prokaryotic cells (e.g., some bacteria) can have flagella.
4. In eukaryotic cells, the nucleus houses the DNA.
5. Chromatin condenses to form chromosomes during cell division.
6. The nucleolus is involved in ribosome synthesis, not DNA production. DNA is replicated in the nucleus (for eukaryotes) or the nucleoid region (for prokaryotes).

Answer:

1. False
2. True
3. False
4. True
5. True
6. False