Bacterial cells differ from animal cells because bacterial cells

Answer and explanation

Correct answer: D. have no nucleus and their DNA is free in the cytoplasm

  1. Step 1: Bacterial DNA is a circular chromosome (and plasmids).
  2. Step 2: It is not enclosed in a nucleus, so it lies free in the cytoplasm.
Answer
have no nucleus and their DNA is free in the cytoplasm.
Why not the others: contain chloroplasts for photosynthesis: most bacteria have none. have a nucleus surrounded by a double membrane: this describes animal and plant cells. have no cell membrane: all cells have a cell membrane.

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