Pathogens & the Immune System

Question 1

Which of the following statements accurately describes a type of pathogen and a way that white blood cells eliminate it?

Accepted Answer

Neutrophils engulf bacteria and then destroy them by releasing digestive enzymes inside the phagosome.

Answer

Neutrophils destroy bacteria by producing heat that denatures the bacterial proteins.

Answer

Neutrophils engulf viruses and then destroy them by releasing digestive enzymes inside the phagosome.

Answer

Neutrophils release antibodies that bind to fungi, marking them for destruction.

Question 2

Which of the following correctly matches a type of pathogen with an example of that pathogen and a disease it commonly causes?

Accepted Answer

Bacteria – Streptococcus pyogenes – strep throat

Answer

Virus – Streptococcus pyogenes – strep throat

Answer

Fungus – Influenza virus – flu

Answer

Bacteria – Candida albicans – thrush

Question 3

A cut on Sam's finger becomes infected with Staphylococcus aureus. Which statement correctly describes two ways Sam's white‑blood‑cell defenses will act against the bacteria?

Accepted Answer

Macrophages engulf the bacteria, and B‑cells produce antibodies that attach to the bacteria, marking them for other cells to destroy.

Answer

Neutrophils release antibodies that dissolve the bacterial cell wall, and T‑cells engulf the bacteria.

Answer

B‑cells engulf the bacteria and also produce antibodies that directly kill the bacteria inside the cell.

Answer

Macrophages produce antibodies that bind to the bacteria, and B‑cells swallow the bacteria whole.

Try three questions

Which of the following statements accurately describes a type of pathogen and a way that white blood cells eliminate it?

Which of the following correctly matches a type of pathogen with an example of that pathogen and a disease it commonly causes?

A cut on Sam's finger becomes infected with Staphylococcus aureus. Which statement correctly describes two ways Sam's white‑blood‑cell defenses will act against the bacteria?

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