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The video introduces the concept of a virus, explaining its basic nature and implications.

What is a virus primarily composed of?

• Vitamins and minerals

• Water and salts

• Carbohydrates and lipids

• Proteins and nucleic acids

How do viruses typically affect human health?

• By improving digestion

• By causing infections and diseases

• By boosting the immune system

• By enhancing brain function

Which of the following is a common method to prevent viral infections?

• Listening to music

• Regular exercise

• Vaccination

• Drinking herbal tea

What is one way to manage a viral infection once contracted?

• Ignoring symptoms

• Taking antibiotics

• Rest and hydration

• Increasing sugar intake

Which of the following is NOT a characteristic of viruses?

• They can reproduce independently

• They can mutate over time

• They are smaller than bacteria

• They require a host to replicate