Defense Against Disease IB Biology

What is the body's first line of defence from pathogens?

• Vomiting

• Hydrochloric acid in stomach

• Skin

• All of them

Which type of cell releases mucus to trap dirt?

• Phagocyte

• Lymphocyte

• Ciliated cell

• Goblet cell

What do lymphocytes produce to counteract toxins produced by bacteria?

• Antitoxins

• Antibodies

• Antigens

• Toxins

What is the process where phagocytes engulf and destroy pathogens?

• Antitoxin production

• Antibody production

• Memory cell formation

• Phagocytosis

What type of white blood cells produce the correct antibody to bind and destroy a pathogen?

• Eosinophils

• Phagocytes

• Lymphocytes

• Memory cells

What do memory cells do in the immune system?

• Create antibodies quickly

• Produce antigens

• Prevent infection

• Engulf and digest pathogens

Which of the following is NOT a body barrier to prevent initial infection?

• Mucus lining airways with cilia

• Diarrhoea

• Producing antibodies

• Chemical barriers

What is the function of ciliated cells in the airways?

• Release mucus to trap pathogens

• Produce antibodies

• Move mucus out of the lungs

• Engulf and digest pathogens

What is the main function of phagocytes in the immune system?

• Create memory cells

• Engulf and digest pathogens

• Produce antitoxins

• Produce antibodies

What do lymphocytes produce to counteract toxins produced by bacteria?

• Antibodies

• Antigens

• Antitoxins

• Toxins