Flashcardziz: Virus vs Bacteria

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What is a virus?

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A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism. It is composed of a protein coat called a capsid that contains either DNA or RNA.

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What is bacteria?

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Bacteria are single-celled microorganisms that are prokaryotic, meaning they lack a nucleus. They can be found in various shapes and sizes and can be beneficial or harmful.

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What is the main difference between viruses and bacteria?

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The main difference is that viruses are not considered living organisms as they cannot reproduce on their own, while bacteria are living organisms that can reproduce independently.

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What are pathogens?

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Pathogens are microorganisms that can cause disease. Both viruses and bacteria can be classified as pathogens.

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What is a capsid?

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A capsid is the protein shell of a virus that encases its genetic material (DNA or RNA).

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Can viruses and bacteria be treated with antibiotics?

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No, antibiotics are effective against bacteria but not against viruses. Viral infections require different treatments.

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What shapes can bacteria take?

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Bacteria can come in various shapes, including cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped).

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What is the size comparison between viruses and bacteria?

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Bacteria are generally larger than viruses. Bacteria can be seen under a light microscope, while viruses require an electron microscope to be observed.

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Are all bacteria harmful?

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No, not all bacteria are harmful. Many bacteria are beneficial and play essential roles in processes like digestion and nutrient cycling.

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What is an example of a viral disease?

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An example of a viral disease is influenza (the flu), which is caused by the influenza virus.