Final answer:
Viruses lack the essential characteristics of living organisms, are acellular, and rely on host cells for replication.
Explanation:
Viruses are different from bacteria in several ways:
- Viruses are not considered alive because they lack essential characteristics of living organisms, such as the ability to reproduce independently.
- Viruses are acellular and do not possess cellular organelles or metabolic machinery, relying on host cells for replication.
- Most viruses contain either DNA or RNA, not both, and they cannot conduct metabolism or maintain homeostasis.
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