Understanding Viruses: The Science Behind Human Infections

The video explains viruses, tiny particles that are neither dead nor alive, which use living cells to reproduce. It highlights their small size, making them hard to study, and their impact on human health, causing diseases like measles and HIV. Fortunately, vaccines have been developed to protect against many dangerous viruses.

What is a virus in the context of biology?

• A type of fungus

• A large organism

• A tiny particle neither dead nor living

• A type of bacteria

How do viruses reproduce?

• By photosynthesis

• By absorbing nutrients

• By using living cells

• By dividing themselves

Approximately how many viruses can fit in a single drop of blood?

• 100 million

• 10 thousand

• 5 billion

• 1 million

Which of the following viruses can cause death to large numbers of people?

• Common cold

• Measles

• Chickenpox

• Rabies

What have scientists developed to protect us from many dangerous viruses?

• Herbal remedies

• Antibiotics

• Vaccines

• Antivirals