B. fragilis Bacteria Quiz

What is the normal population of B. fragilis bacteria in the healthy gut microbiome?

• 0.1%

• 0.5%

• 1%

• 5%

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How do B. fragilis bacteria help strengthen the body's defenses?

• By producing immune cells

• By attacking harmful bacteria

• By sticking to the gut wall

• By repairing gut cells

What is the main reason why B. fragilis bacteria can thrive in the human gut?

• They can break down undigested food

• They can attack human cells

• They can produce substances that keep gut cells healthy

• They can escape from the gut

What happens when B. fragilis bacteria escape from the gut?

• They attack human cells and use them as food

• They strengthen the body's defenses

• They prevent harmful microorganisms from moving in

• They produce substances that repair and protect gut cells

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Why are B. fragilis bacteria hard for the body's defenses to fight outside the gut?

• Because they attack immune cells

• Because they produce substances that weaken the immune system

• Because they can use human cells as food

• Because they can escape from the body

What can happen if the gut wall is damaged?

• B. fragilis bacteria become harmless

• B. fragilis bacteria become helpful

• B. fragilis bacteria become dangerous

• B. fragilis bacteria become inactive

What is the role of B. fragilis bacteria in the human gut?

• To attack harmful bacteria

• To produce substances that repair gut cells

• To prevent harmful microorganisms from moving in

• To weaken the immune system

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Why are many antibiotics not effective against B. fragilis infections?

• Because B. fragilis bacteria can escape from the body

• Because B. fragilis bacteria attack immune cells

• Because B. fragilis bacteria produce substances that weaken the immune system

• Because B. fragilis bacteria can use human cells as food

What can happen if there are fewer helpful bacteria like B. fragilis in the gut?

• More harmful bacteria can live and cause infection

• The immune system becomes stronger

• The gut cells become healthier

• The body becomes more resistant to diseases

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What is the main source of food for B. fragilis bacteria in the human gut?

• Undigested food

• Harmful bacteria

• Gut cells

• Immune cells

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