NCEA L1 ChemBio Practice Questions - NCEA Level 1 Chemistry And Biology Exam

Why are viruses classified as obligate intracellular parasites rather than free-living organisms?

They lack cellular organelles and cannot replicate without hijacking a host cell's metabolic machinery They possess a thick cell wall that prevents metabolic exchange with the environment They undergo binary fission only in nutrient-rich agar solutions They carry out aerobic respiration using host mitochondria

Correct Answer:

They lack cellular organelles and cannot replicate without hijacking a host cell's metabolic machinery

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