Which are examples of biohazards?

Which are examples of biohazards?

• A. Bacteria, viruses, spores, and toxins.
• B. Household dust, pollen, and pet dander.
• C. Water vapor, oxygen, and nitrogen.
• D. Metal shavings and paint chips.

Answer: (A)

Biohazards are materials that come from living organisms and can cause infection, disease, or toxic effects. Bacteria and viruses are classic biological agents that can invade the body and multiply, while spores are hardy forms that help microbes survive harsh conditions and later cause infection. Toxins are poisonous substances produced by living organisms, capable of causing harm even if the organism itself isn’t present. This combination—organisms or their toxic products—defines biohazards. Household dust, pollen, and pet dander are organic particles that can trigger allergies or irritation but aren’t infectious agents or toxins produced by organisms, so they’re not classified as biohazards in the same sense. Water vapor, oxygen, and nitrogen are simple gases, not biological threats, and metal shavings or paint chips are physical or chemical hazards rather than biological ones.

Biohazards are materials that come from living organisms and can cause infection, disease, or toxic effects. Bacteria and viruses are classic biological agents that can invade the body and multiply, while spores are hardy forms that help microbes survive harsh conditions and later cause infection. Toxins are poisonous substances produced by living organisms, capable of causing harm even if the organism itself isn’t present. This combination—organisms or their toxic products—defines biohazards.

Household dust, pollen, and pet dander are organic particles that can trigger allergies or irritation but aren’t infectious agents or toxins produced by organisms, so they’re not classified as biohazards in the same sense. Water vapor, oxygen, and nitrogen are simple gases, not biological threats, and metal shavings or paint chips are physical or chemical hazards rather than biological ones.