Defences Against Pathogens: Chapter 11.1 / 11.2 Quiz

Which of the following best describes the focus of the chapters mentioned in the image?

• How the body protects itself from harmful microorganisms

• How plants make their own food

• How the heart pumps blood

• How energy is produced in cells

Which of the following is a function of the nose and sinuses?

• They store white blood cells

• They cover the eyeball to keep out pathogens

• They contain hair and mucus to trap pathogens

• They produce salty fluids to wash eyes clean

How do tears help protect the eyes?

• By storing white blood cells

• By trapping pathogens with hair and mucus

• By washing eyes clean with salty fluids

• By warming incoming air

Select the correct diagram that shows the protective roles of hair, ears, eyelashes, stomach, and skin against pathogens.

• A diagram of the digestive system

• A diagram of the respiratory system

• A labeled diagram of a human body showing the protective roles of hair, ears, eyelashes, stomach, and skin against pathogens.

• A diagram of the circulatory system

What does the suffix “-itis” indicate in medical terms?

• Inflammation

• Infection

• Healing

• Bleeding

What is the main function of antibodies in the third line of defence?

• To digest food

• To mark and neutralize pathogens for white blood cells

• To produce energy

• To transport oxygen

What is the role of B cells in the immune response?

• They destroy pathogens directly.

• They make and release antibodies for the given pathogen.

• They show antigens to Helper T cells.

• They invade the body as pathogens.

After a pathogen invades the body, what do white blood cells do to help protect you?

• They become pathogens.

• They surround and destroy the pathogens.

• They turn into red blood cells.

• They release insulin.

Why is it important for white blood cells to show antigens from the pathogen to Helper T cells?

• So Helper T cells can identify and coordinate the immune response.

• So red blood cells can carry more oxygen.

• So platelets can form clots.

• So the pathogen can multiply faster.

Arrange the following steps in the correct order for the immune response: 1. Pathogen invades the body 2. White blood cells show antigens to Helper T cells 3. B cells make and release antibodies 4. Antibodies attach to antigens and destroy them

• 1, 2, 3, 4

• 2, 1, 3, 4

• 1, 3, 2, 4

• 1, 2, 4, 3