Plasmids are distinguished from bacterial chromosomes in that
A. plasmids are circular, bacterial chromosomes are linear.
B. plasmids occur in the cytoplasm, bacterial chromosomes occur in the nucleus.
C. plasmids consist of single-stranded nucleic acids, bacterial chromosomes consist of double-stranded nucleic acids.
D. plasmids have few genes, bacterial chromosomes have many genes.
E. plasmids are composed of RNA, bacterial chromosomes are composed of DNA.
Answer: D
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