Question

select all statements that are true about bacteria. a bacteria are living pathogens that can cause illnesses. b bacteria have two stages of reproduction, the lytic cycle and lysogenic cycle. c bacterial infections can be prevented by vaccines and treated by antivirals. d bacteria can be both helpful and harmful.

Explanation:

• A: Some bacteria are pathogens causing illnesses, but not all.
• B: The lytic and lysogenic cycles are for viral reproduction, not bacterial.
• C: Bacterial infections are treated with antibiotics, not antivirals. Vaccines can prevent some.
• D: Bacteria can be beneficial (e.g., in digestion) or harmful (e.g., causing disease).

Answer:

D. Bacteria can be both helpful and harmful.