AQA - Biology - Non - specific response

Which of the following is a physical barrier that prevents pathogens from entering the body?

• Antibodies

• Skin

• White blood cells

• Enzymes

How does mucus help in defending the body against pathogens?

• By producing antibodies

• By trapping pathogens

• By engulfing pathogens

• By breaking down pathogens

What is the role of the skin in preventing the entry of pathogens?

• It produces antibodies

• It acts as a physical barrier

• It engulfs pathogens

• It produces mucus

Which of the following is a chemical barrier that prevents pathogens from entering the body?

• Skin

• Mucus

• Stomach acid

• White blood cells

What is the process called when white blood cells engulf pathogens?

• Phagocytosis

• Photosynthesis

• Respiration

• Fermentation

Which type of white blood cell is primarily responsible for engulfing pathogens?

• Lymphocytes

• Phagocytes

• Erythrocytes

• Platelets

How does stomach acid act as a chemical barrier against pathogens?

• By neutralising pathogens

• By trapping pathogens

• By breaking down pathogens

• By engulfing pathogens

What happens to pathogens after they are engulfed by white blood cells?

• They are neutralised by antibodies

• They are digested and destroyed

• They are trapped in mucus

• They are expelled from the body